A researcher placed 25.0 g of silver chloride, AgCl, in sunlight and allowed the substance to...
Question:
A researcher placed 25.0 g of silver chloride, {eq}AgCl {/eq}, in sunlight and allowed the substance to decompose completely to form silver, {eq}Ag {/eq}, with the release of chlorine gas, {eq}Cl_2 {/eq}. The gas was collected in a container during the decomposition. The researcher determined that the mass of the silver formed was 18.8 g, and the mass of the chlorine gas formed was 6.2 g. The equation for the reaction is as follows.
{eq}2AgCl \to 2Ag + Cl_2 {/eq}
State the law of definite proportions, and then use the researcher's data to confirm the law of definite proportions.
Law of Definite Proportions:
The elements of a specific compound exist in a constant ratio following the law of constant proportions. Another name for this law is Proust's law. The chemical compound's source does not impact the ratio of the specific element.
Answer and Explanation: 1
Become a Study.com member to unlock this answer! Create your account
View this answerThe law of definite proportions states that the chemical compound's individual elements always exist in a fixed ratio by mass.
Given data:
- The...
See full answer below.
Ask a question
Our experts can answer your tough homework and study questions.
Ask a question Ask a questionSearch Answers
Learn more about this topic:

from
Chapter 6 / Lesson 12Learn who discovered the law of definite proportions. Understand the law of definite proportions definition and find law of definite proportions examples.
Related to this Question
- A researcher placed 25.0 grams of silver chloride, AgCl, in sunlight and allowed the substance to decompose completely to form silver, Ag, with the release of chlorine gas, Cl2. The gas was collected in a container during the decomposition. The researcher
- A 1.24-g sample of an alkaline earth metal chloride is treated with excess silver nitrate. All of the chloride is recovered as 3.20 g of silver chloride. Identify the metal.
- A 1.00-g sample of an alkaline earth metal chloride is treated with excess silver nitrate. All of the chloride is recovered as 1.38 g of silver chloride. Identify the metal.
- A silver coin has a mass of 2.50 g and is analyzed for silver by dissolving in dilute nitric acid, and precipitating silver as solid AgCl and weighing this. If the precipitate weighs 2.99 g, what perc
- An organic pesticide (MW 183.7) is 8.43% Cl. A 0.627 g sample containing the pesticide plus inert material containing no chloride was decomposed with metallic sodium in alcohol. The liberated chloride ion was precipitated as AgCl weighing 0.0831 g. Calcul
- A 0.3991 g of an unknown containing chloride is dissolved and precipitated with 43.98 mL of excess 0.1056 M AgNO_3. A sintered glass crucible weighing 23.4101 g is used to filter out the resulting AgCl. The new weight of the dried crucible is 23.9622 g. C
- A sample of an unknown metal reacts with 10.000 grams of chlorine gas to produce 23.5555 grams of a metal chloride. When dissolved in 100.00 mL of water, the concentration of the metal ion is 0.70522 M. Determine the empirical formula of this metal chlori
- A 5.000 g sample of a pesticide was decomposed with metallic sodium in alcohol, and the liberated chloride ion was precipitated as AgCl. Express the results of this analysis in terms of percent DDT (C_{14}H_9Cl_5, 354.50 g/mol), one of the components, bas
- To assay silver content in an alloy, a 13.38 g sample of alloy was dissolved in nitric acid. The addition of 0.53 molar sodium chloride resulted in the precipitation of silver chloride. If the alloy w
- A mixture of AgCl and AgI, is being heated in a current of chlorine gas, is converted entirely into AgCl and is found to have lost exactly 6% of its weight. What is the percent of Chlorine in the original mixture?
- Silver forms a compound with nitrogen. In an experiment, 344.588 g of silver is placed in a reaction vessel with 15.906 of nitrogen. After the reaction is complete, all of the silver has been consumed
- Silver chloride, often used in silver plating, contains 75.27 % Ag. Calculate the mass of silver chloride required to plate 195 mg of pure silver.
- Silver chloride, often used in silver plating, contains 75.27 % Ag. Calculate the mass of silver chloride required to plate 245 mg of pure silver.
- A silver recovery unit can process 1500 L of photographic silver waste solution per day. Adding excess solid sodium chloride to a 500 mL sample of the waste gives a white precipitate that, after filtration and drying, consists of 3.73 g of AgCl. a. Write
- Silver carbonate, Ag2CO3, is a light yellow compound that decomposes when heated to give silver oxide and carbon dioxide. A researcher measured the partial pressure of carbon dioxide over a sample of silver carbonate at 220 C and found that it was 1.37 a
- Silver carbonate, Ag2CO3, is a light yellow compound that decomposes when heated to give silver oxide and carbon dioxide. A researcher measured the partial pressure of carbon dioxide over a sample of silver carbonate at 220 C and found that it was 1.37 at
- A student reacted a 0.367 g piece of Mg with excess silver nitrate according to the equation below. The student isolated and weighed the silver metal produced, collecting 2.74 g of silver. Mg(s) + 2AgNO3(aq) arrow Mg(NO3)2(aq) + 2Ag(s) A) Determine the a
- A 5.000 g sample of a pesticide was decomposed with metallic sodium in alcohol; the liberated chloride ion was precipitated as AgCl. Express the results of this analysis in terms of percent DDT (C14H9Cl5, 354.0 g/mol) based on the recovery of 0.1606 g of
- A sample of indium chloride, InCl_3, is known to be contaminated with sodium chloride. The contaminated sample weighs 2.87 g. When the contaminated sample is treated with excess AgNO_3(aq), 5.79 grams
- A 0.1 M solution of copper(II) chloride, CuCl_2, causes the light bulb in the conductivity experiment to glow brightly. When hydrogen sulfide, H_2S, a very weak acid, is added to the solution, a black precipitate of copper(II) sulfide, CuS, forms, and the
- Photogray lenses incorporate small amounts of silver chloride in the glass of the lens. When light hits the AgCl particles, the following reaction occurs: AgCl to Ag + Cl. The silver metal that is for
- You're going to analyze a mineral sample that weighs 111.515 g for the silver (Ag, AW=107.87 g/mol) content. You dissolve the mineral sample in acid solution. To that solution, you add excess chloride
- A 27.10 gram sample of manganese is heated in the presence of excess chlorine. A metal chloride is formed with a mass of 62.06 g. Determine the empirical formula of the metal chloride.
- A 22.26 gram sample of cobalt is heated in the presence of excess chlorine. A metal chloride is formed with a mass of 62.44g. Determine the empirical formula of the metal chloride.
- Copper reacts with aqueous silver nitrate to produce silver metal. The following data were collected. initial mass of copper = 1.76 g final mass of copper = 1.12 g mass of filter paper = 0.91 g mass of filter paper plus silver = 3.12 g a. Write the balanc
- Treatment of a 0.400 g sample of impure potassium chloride with an excess of AgNO_3 resulted in the formation of 0.733 g of AgCl. Calculate the percentage of KCl in the sample.
- Iron forms two chlorides. One gram of the first chloride produces 2.26 g of silver chloride and one gram of the second chloride produces 2.65 g of silver chloride. Prove that these data illustrate the
- The chloride in 0.272 g of a sample was precipitated by the addition of 50.00 mL of AgNO3 0.1030 M. The titration of excess silver has spent 8.65 mL of KSCN 0.1260 M. Express the outcome of this analy
- You have a dry sample that contains potassium chloride along with some impurities. When 0.45 grams of this sample is dissolved in water and treated with an excess of silver nitrate, 0.8402 grams of silver chloride is precipitated. Calculate the percent by
- Experiment for SN1 reactions in silver nitrate/ethanol. 1. 1-chlorobutane 2. 1-bromobutane 3. 2-chlorobutane 4. 2-bromobutane 5. bromocyclohexane 6. 2-chloro-2-methylpropane (t-butyl chloride)
- Sample of silver metal is suspected to be contaminated with zinc. A 0.2365 g portion of this metal is dissolved in nitric acid and the silver ions precipitated with excess aqueous NaCl. After filterin
- A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe^2 and Fe^3 has a cell potential of 0.743 V. If the silver-silver chloride electrode is replaced with a saturated calomel el
- Compound Z is known to contain only the elements carbon, hydrogen, nitrogen, and chlorine. When 1.00 gram of Compound Z is dissolved in water and allowed to react with excess AgNO3, all of the chlorine in Compound Z precipitates as solid silver chloride (
- A student puts 1.18 mol of substance A and and 2.85 mol of substance B into a 10 L flask which was then closed. The reaction that took place was: A(g)+ 2B(g) \leftrightharpoons 3C(g) + D(g) On analysi
- A student did a similar experiment with Ag and 0 to produce silver oxide. Here is the data from the experiment Mass of crucible and cover: 29.307 g Mass of crucible, cover, and silver: 30.958 g Mass o
- An impure silver sample weighing 0.1652\ g reacts with diluted \rm HNO_3, forming the acid \rm HCl, a white precipitate that weighed 0.0911\ g of silver chloride. What degree of purity of silver in the sample?
- Hydrochloric acid oxidizes zinc metal in a reaction that produces hydrogen gas and chloride ions. A piece of zinc metal of mass 8.5 g is dropped into an apparatus containing 800.0 mL of 0.500 M HCl(aq).
- What is the identity of the two corrosive gases that are evolved during the free radical chlorination of 1-chlorobutane by sulfuryl chloride with azobisisobu-tyronitrile as an initiator and how will you control their escape into the lab atmosphere?
- Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 1.06 g of sodium and 1.63 g of chlorine. Which of the following could be the results of the decomposition of the other sample, being consistent with the la
- A chemist wants to extract copper metal from copper chloride solution. The chemist places 1.5 grams of aluminum foil in a solution of 14 grams of copper (II) chloride. A single replacement reaction takes place. What best explains the state of the reaction
- A 4.90-g sample containing only Mn2(SO4)3(s) and Al2(SO4)3(s) is dissolved in an aqueous solution. The metal ions are precipitated as hydroxides, which are pyrolyzed in the air to produce 1.75 g of a mixture of Mn2O3(s) and Al2O3(s). (a) What was the per
- Sodium burns in chlorine to produce sodium chloride according to the reaction: 2Na(s) + Cl2(g) = 2NaCl(s) A student is asked to predict the mass of sodium chloride produced when 71 g of sodium is placed in a container of 200 g of chorine. The container is
- As an inquisitive chemist, you discover a mysterious element (X) in your experiment. Element X forms both a dichloride, XCl2, and a tetrachloride XCl4. Treatment of 10.00 g of XCl2 with an excess of chlorine (Cl2) forms 12.55g of XCl4. Calculate the atomi
- A student cleaned a crucible with HCl. After pouring the HCl into the waste container, the crucible was neither rinsed with water or dried before the student added the NaHCO_3 and KCl mixture. The cru
- A student ran the following reaction in the laboratory at 592 K: cO(g) + cl_2(g)=coCl_2(g) When he introduced CO(g) and Cl_2(g) into a 1.00 L evacuated container, so that the initial partial pressur
- The phosphorus in a 4.258-gram sample of a plant food was converted to PO43- and precipitated as Ag3PO4 through the addition of 50 mL of 0.0820 M AgNO3. The excess AgNO3 was back-titrated with 4.86 mL of 0.0625 M KSCN. Express the results of this analysis
- A commercial sample of pyrite (FeS_2) is oxidized by bromine and nitric acid. The sulphate obtained is precipitated and heavy in the form of BaSO_4. If 0, 331 g of pyrite originated 0.813 g of BaSO_4,
- A mixture contained zinc sulfide, ZnS, and lead sulfide, PbS. A sample of the mixture weighing 6.12 g was reacted with an excess of hydrochloric acid. The reactions are given below. ZnS(s) + 2HCl(aq)
- In an experiment, a mixture of copper and sulfur was heated to produce a sample of copper sulfide. The following data were obtained. Calculate the empirical formula of copper sulfide. Weight of the empty crucible = 2.077 grams Weight of the crucible + cop
- 104.6 g of sodium bicarbonate (NaBr) solution has a volume 100.0 mL. Upon evaporation, 6.28 g of the solid residue of NaBr was observed. Calculate the mass percent of NaBr.
- A student finds that 24.96 g of water at 24.9 degree Celsius (density = 0.9971 g/cm^3) is required to completely fill an empty flask. The water is removed and completely dried; granular solid copper weighing 51.24 g is then added to the flask. With the co
- A sample is a mixture of AgNO3, CuCl2, and FeCl3. When a 1.0000-g sample of the mixture is dissolved in water and reacted with excess silver nitrate, 1.7809 g of precipitate forms. When a separate 1.0000-g sample of the mixture is treated with a reducing
- The black tarnish that forms on pure silver is the sulfide Ag2S, formed by reaction with H2S in the atmosphere: 4 Ag + 2 H2S + O2 \to 2 Ag2S + 2 H2O The sulfide forms in preference to Ag2O, even though the atmosphere is 20% O2 with just a trace of H2S. Ex
- A student made a miraculous discovery and said a hydrate of cobalt (II) chloride changes color as a result of the presence of water vapor, as shown in the reaction below. Is the student correct, does the compound change to pink color indicating moist air?
- Calcium carbonate is hygroscopic, meaning it will absorb moisture from the atmosphere. A researcher needs to ensure that the reagent is pure so she places 5.00 g of the calcium carbonate in a 25.0 mL sealed vial and heats this in an oven at 300K for an ho
- Treatment of a 0.400 g sample of impure potassium chloride with an excess of AgNO_3 resulted in the formation of 0.7332 g AgCl, calculate the percentage of KCl in the sample.
- Chlorine gas, Cl_2, can be generated in small quantities by addition of concentrated hydrochloric acid to manganese(IV) oxide. MnO_4 (s) + 4HCl (aq) to MnCl_2 (aq) + 2 H_2O (l) + Cl_2 (g) The chlorine gas is bubbled through water to dissolve any traces of
- What mass of silver will be formed when 15.0 A is passed through molten AgCl for 25.0 minutes?
- Would a piece of jewelry made from an alloy of silver and copper be expected to tarnish (oxidize) in a laboratory where fumes of bromine are present?
- Suppose you weigh three samples of AgCl precipitate using the exact mass weighing method. The sample weight is 0.2500 grams. However, due to the existence of random error, your three samples' weights are actually 0.2496 grams, 0.2502 grams, and 0.2498 gra
- The Drug Enforcement Agency (DEA) confiscated a hallucinogenic substance during a drug raid. When the DEA chemists subjected the unknown hallucinogen to chemical analysis, they found that the substance had a molecular mass of 314. Elemental analysis revea
- A 9.11-g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb3+(aq). The Sb3+(aq) is completely oxidized by 35.7 mL of a 0.145 M aqueous solution of K
- 6.981 g of aurous chloride , when treated with water gave 3.944 g of gold and auric chloride. The auric chloride obtained gave, on heating, 1.972 g of gold. Show that the data is in the agreement with the law of multiple proportions.
- Data Table 1. Redox Reaction of Copper and Silver Nitrate. Initial observations: before beginning Copper: thin squares Silver Nitrate: Clear Liquid Observations Cu turning black Observations after
- Bromine can be obtained from the decomposition of calcium bromide by means of electrolysis. If 10.0 g of calcium bromide is dissolved in water before electrolysis and if 1.75 L of gaseous bromine is produced at 70 degree C and 80 kPa, what is the theoreti
- A student did experiments to establish the relative reactivity of metallic Zn, Cu, and Pb. The following observations were made (a) both Zn and Pb metals reacted with 6M HCl, but Cu metal did not; (b)
- A 2.0 g sample of silver alloy was dissolved in nitric acid and then precipitated as AgBr. After drying, the sample of silver bromide weighed 2.0 g. Calculate the percentage of silver in the alloy.
- A sample of pyrite, FeS_2, contains only inert impurities and weighs 0.508 g. After the sample has been decomposed and dissolved, a precipitate of 1.561 g BaSO_4 is obtained. If the calculated percentage of S in the sample is 42.21 %, what weight of ignit
- When a piece of magnesium is placed in an acid solution that sits on an analytical balance, gas bubbles are given off of the solid surface of the metal. As this reaction continues, the mass of the container is seen to decrease from scale readings over ti
- A spoon was silver plated electrolytically in a AgNO_3 solution. If 0.750 g of Ag was deposited on the spoon at a constant current of 20.0 mA, how long in hours did the electrolysis take?
- In a laboratory experiment, a 10.0Ml sample of sodium chloride solution is poured into an evaporating dish with a mass of 24.10g. The combined mass of the evaporating dish and the sodium chloride is 36.15g. After heating, the evaporating dish and sodium
- We pass enough current through a solution to plate out one mole of nickel metal from a solution of NiSO4. In other electrolysis cells, this same current plates out two moles of silver from AgNO3 solution but liberates only one-half mole of O2 gas. Explain
- A student ran the following reaction in the laboratory at 580 K: CO(g) + Cl_2(g) <-->COCl_2(g) When he introduced CO(g) and Cl2(g) into a 1.00 L evacuated container, so that the initial partial pres
- What occurs in electroplating? a. decomposition of an ionic compound b. decomposition of a salt layer c. deposition of a metal layer on a material d. deposition of a salt layer on a metal
- You have a chemical in a sealed glass container filled with air. The setup is placed on a weighing balance, which reads 250.0 g. The chemical is ignited by means of a magnifying glass focusing sunlight on the reactant. After the chemical has completely bu
- Treatment of 1.385g of an unknown metal M with an excess of aqueous HCl evolved a gas that was found to have a volume of 382.6mL at 20.0^0 C and 755 mm Hg pressure. Heating the reaction mixture to evaporate the water and remaining HCl then gave a white cr
- During a laboratory experiment, a 3.81-gram sample of NaHCO3 was thermally decomposed. In this experiment, carbon dioxide and water vapors escape and are combined to form carbonic acid. After decomposition, the sample weighed 2.86 grams. a. Calculate the
- During a laboratory experiment, a 2.36-gram sample of NaHCO3 was thermally decomposed. In this experiment, carbon dioxide and water vapors escape and are combined to form carbonic acid. After decomposition, the sample weighed 1.57 grams. Calculate the per
- During a laboratory experiment, a 3.81-gram sample of NaHCO3 was thermally decomposed. In this experiment, carbon dioxide and water vapors escape and are combined to form carbonic acid. After decomposition, the sample weighed 2.86 grams. Calculate the per
- Chloride samples are to be prepared for student analysis by combining NaCl, KCl, and NH4Cl, either alone or mixed in various proportions. What minimum volume of a 5.00 % AgNO3 solution (sp gr 1.041) must be added to a sample weighing 0.300 grams in order
- A student is given a sample in lab which contains one of the ions listed below. After adding a few drops of AgNO_3 solution to part of the unknown sample, the student observed a greyish precipitate. After adding a few drops of Mg(NO_3)_2 solution to anoth
- During a laboratory experiment, a 3.24-gram sample of NaHCO_3 was thermally decomposed. In this experiment, carbon dioxide and water vapors escape and are combined to form carbonic acid. After decomposition, the sample weighed 2.19 grams. Calculate the pe
- When 4.2 g of NaHCO3 is added to a solution of CH3COOH weighing 10 g, it is observed that 2.2 g of CO2 is released into the atmosphere. The residue left is found to be 12 g. Show that these observatio
- Metals bond with halogens to form colorless metal halides. During an experiment, bromine water was added to a solution of potassium iodide. A record of the experiment is shown. Reactants color: Br2 = light orange solution, KI = colorless solution Color of
- Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese (IV) oxide: 4HCl (aq) +MnO_2 (s) to MnCl_2 (aq) + 2H_2O (l) + Cl_2 (g) Adding 40.7 g of MnO_2 to a solution containing a 47.5 g of HCl. What is the theor
- Students heated red mercury(II) oxide until they got a positive splint test for oxygen. They also noticed that the test tube was coated with silvery mercury metal, which they were inhaling. If a student used 45.5 grams of HgO in this experiment, how many
- On a recent trip out of the country, a chemistry professor found a golden-colored metal coin at a flea market. The person selling the coin priced it at $200, claiming it was pure gold. Being a well-equipped traveler and a chemist, the professor produced h
- Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese(IV) oxide. 4 H C l ( a q ) + M n O 2 ( s ) M n C l 2 ( a q ) + 2 H 2 O ( l ) + C l 2 ( g ) A sample of 40.9 g M n O 2 is added to a solution containin
- Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese(IV) oxide: 4HCl(aq) + MnO_2(s) longrightarrow MnCl_2(aq) + 2H_2O(l)+Cl_2(g). You add 39.3 g of MnO_2 to a solution containing 49.3 g of HCl. a. What i
- Pyrite is a mineral with the formula FeS2. An impure sample of pyrite, known to be 90-95% w/w FeS2, is to be analyzed by oxidizing all the sulfur to SO42- and then precipitating as BaSO4. Exactly how many grams of the sample must be taken if a minimum of
- As a newly graduated chemist you find yourself working in a forensic lab. Your assignment today is to test a white crystalline substance found at a crime scene.
- A student tried to recover all the gold metal from a 1.738 M solution of gold (III) sulfate by adding magnesium metal. They started with 450 gal of solution and added 65 lb of magnesium metal. When the reaction was complete, they recovered 150 lb gold met
- In an experiment, 95.0 mL of 0.225 M silver nitrate was mixed rapidly with 47.5 mL of 0.225 M calcium chloride in a coffee cup calorimeter. If a reaction occurred, was it exothermic or endothermic? If
- A 1.0000 gram sample of zinc metal is added to a solution containing 1.2500 grams of an unknown compound made of niobium, fluoride, and chloride. The reaction results in the formation of zinc fluoride, zinc chloride, and metallic niobium, When the reactio
- When she discovered that a piece of shiny gray zinc was too large to fit through the opening of an Erlenmeyer flask, a student cut the zinc into smaller pieces so they would fit. She then poured enough blue copper chloride solution into the flask to cover
- You are presented with a white solid and told that due to careless labeling it is not clear if the substance is barium chloride, lead chloride, or zinc chloride. When you transfer the solid to a beaker and add water, the solid dissolves to give a clear so
- A sample of impure magnesium was analyzed by allowing it to react with excess HCl solution: After 1.27 g of the impure metal was treated with 0.100 L of 0.768 M HCl, 0.0125 mol HCl remained. Assuming the impurities do not react, what is the mass % of Mg i
- A voltaic cell is constructed using solid zinc (Zn) as the anode and solid silver (Ag) as the cathode. The zinc electrode is immersed in a solution of Zn(NO_3)_2 of unknown concentration. The silver e
- Bromine can be obtained from the decomposition of calcium bromide by means of electrolysis. If 10.0 g of calcium bromide are dissolved in water before electrolysis and if 1.75 L of gaseous bromine is produced at 70 degree C and 80 kPa, what is the theoret
- Chlorine gas can be prepared in a laboratory by the reaction of hydrochloric acid with manganese (IV) oxide. 4HCl(aq) + MnO2(s) \rightarrow MnCl2(aq) + 2 H2O(l) + Cl2(g) A sample of 34.7 g MnO2 is added to a solution containing 49.7 g HCl. What is the