A cell is constructed by immersing a strip of iron in a 1.0 M Fe(NO3)2 solution and a strip of...
Question:
A cell is constructed by immersing a strip of iron in a 1.0 M {eq}Fe(NO_3)_2 {/eq} solution and a strip of gold in a 1.0 M {eq}AuNO_3 {/eq} solution. The circuit is completed by a wire and a salt bridge. As the cell operates, the strip of gold gains mass (only gold), and the concentration of gold ions in the solution around the gold strip decreases, while the strip of iron loses mass, and the concentration of iron ions increases in the solution around the iron strip. Write the equations for the half-reactions that occur at the cathode and at the anode.
Electrochemical Cell:
Electrochemical cells can be voltaic or electrolytic cells based on whether the reaction is spontaneous or non-spontaneous. The overall cell potential value can be calculated to determine spontaneity and is obtained from the reduction potential of individual electrodes.
Answer and Explanation: 1
Become a Study.com member to unlock this answer! Create your account
View this answerAn overall reaction in an electrochemical cell is a redox reaction and is obtained by adding the reactions at the anode (oxidation) and the cathode...
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 10 / Lesson 11Electrochemical cells are part of electrochemistry. Explore the parts of an electrochemical cell, the definition of an electrochemical cell diagram, the functions of the anode and the cathode, and how to make a homemade battery.
Related to this Question
- A voltaic cell is constructed by immersing a strip of silver in a 1.0 M AgNO_3 solution and a strip of cadmium metal in a 1.0 M Cd(NO_3)_2 solution. The circuit is completed by a wire and a salt bridge in the usual way. What is the cell potential for the
- A voltaic cell is constructed by immersing a strip of silver in a 1.0 M AgNO_3 solution and a strip of cadmium metal in a 1.0 M Cd(NO_3)_2 solution. The circuit is completed by a wire and a salt bridge in the usual way. (a) What would be the potential o
- A cell is constructed by immersing a strip of silver in 0.10 M AgNO_3 solution and a strip of lead in 1.0 M Pb(NO_3)_2 solution. A wire and salt bridge complete the cell. What is the potential of the
- A voltaic cell is constructed by immersing a strip of lead metal in a 1.0 M Pb(NO_3)_2 solutions and a strip of cadmium metal in a 1.0 M Cd(NO_3)_2 solutions. The circuit is completed by a wire and a salt bridge in the usual way. a. Write the balanced ov
- A voltaic cell is constructed by immersing a strip of silver metal in a 1.0 M AgNO_3 solution and a strip of cadmium metal in a 1.0 M Cd(NO_3)_2 solution. The circuit is completed by a wire and a
- A student constructs a galvanic cell that has a strip of iron metal immersed in a solution of 0.1 M Fe(NO_3)_2 as one half-cell and a strip of zinc metal immersed in a solution of 0.1 M Zn(NO_3)_2 as the other half-cell. The measured cell potential is les
- A student constructs a galvanic cell that has a strip of iron metal immersed in a solution of 0.1 M F e ( N O 3 ) 2 as one half-cell and a strip of zinc metal immersed in a solution of 0.1 M Z n (
- An electrochemical cell is constructed using 1.0 M solutions of Fe(NO3)2 and Sn(NO3)2 and strips of Fe and Sn. A voltmeter is connected to the electrodes and a salt bridge connects the two compartment
- 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
- 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 lbs of magnesium metal. When the reaction was complete, they recovered 150 lbs gold m
- A substitutional solid solution is formed between silver and gold. Calculate the weight percent of gold that should be added to silver to obtain an alloy with 5.5 x 1021 gold atoms per cm3 . Pure gold
- A metal trophy is a solution made up of 50% m/m of copper, 25% m/m of gold, and 25% m/m of silver. a) Which is the solvent in this solution? b) If the trophy has a mass of 450 g, what is the mass of gold present in the trophy?
- A thin layer of gold can be applied to another material by an electrolytic process. The surface area of an object to be gold plated is 49.5 cm2, and the density of gold is 19.3 g/cm3. A current of 3.35 A is applied to a solution that contains gold in the
- As the cell given below operates, the strip of silver gains mass (only silver), and the concentration of silver ions in the solution around the silver strip decreases, while the strip of lead loses mass and the concentration of lead increases in the solut
- A galvanic cell that has a strip of lead metal was immersed in a solution of 0.1M Pb(NO3)2 as one half-cell, and a strip of zinc metal was immersed in a solution of 0.1M Zn(NO3)2 as the other half-cell. The measured cell potential is less than zero when t
- A student constructs a galvanic cell that has a strip of lead metal immersed in a solution of 0.1 M Pb(NO_3)_2 as one half-cell and a strip of zinc metal immersed in a solution of 0.1 M Zn(NO_3)_2 as the other half-cell. The measured cell potential is les
- A voltaic cell similar to that shown in Figure 20.5 is constructed. One electrode half-cell consists of a silver strip placed in a solution of AgN0_3, and the other has an iron strip placed in a solut
- Gold can be plated out of a solution containing Au^3+ (ag) What current in amperes must be applied to this solution to plate out 5.6 g of gold in 25 minutes? assume 100% current efficiency.
- 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 lbs of magnesium metal. When the reaction was complete, they recovered 150 lbs of gol
- Gold (atomic mass 197) is plated from a solution of chlorauric acid, HAuCls; it deposits on the cathode. Calculate the time it takes to deposit 0.74 gram of gold, passing a current of 0.10 amperes. (1
- Electrorefinement of Gold In the refinement of gold a basic solution of Au(CN)4- is electrolyzed. Gold metal and oxygen gas are produced at the electrodes. Answer the following questions by selecting
- Metal plating is done by passing current through a metal solution. For example, an item can become gold plated by attaching the item to a power source and submerging it into a Au solution. The item it
- In an experiment to electroplate iron with silver, a current of 0.5 amperes was passed through a solution of silver nitrate for one hour. Give two reasons why it is necessary to electroplate with silver.
- When the copper coil is put into a solution of 6M NaOH and zinc dust, it turns silver. Does the silver coating stay permanently? And when the Silver coated coil is heated it turns to gold, is this permanent as well?
- An electrolytic cell is set up to plate Zr(s) from a solution containing Zr^4+ (aq). A current of 8.03 amps is run through this solution for 1.44 hours. The mass of Zr(s) plated out during this proces
- The following items are obtained from the stockroom for construction of a galvanic cell: two beakers and a salt bridge, wire with clips, 200 mL of a 1.00 M Mn^2+ (aq) solution, 200 mL of a 1.00 M Au^3
- Suppose that a cell was formed by immersing a silver anode in an analyte solution that was 0.0250 M Cl^-, Br^-, and I^- ions and connecting the half-cell to a saturated calomel cathode via a salt bridge. (a) Which halide would form first and at what pote
- A voltaic cell is constructed in which the anode is a Zn|Zn^2+ half cell and the cathode is a Pb|Pb^2+ half cell. The half-cell compartments are connected by a salt bridge. (Use the lowest possible c
- A 1M solution of Cu(NO3)2 is placed in a beaker with a strip of Cu metal. A 1 M solution of SnSO4 is placed in a second beaker with a strip of Sn metal. A salt bridge connects the two beakers, and wires to a voltmeter link the two metal electrodes. Write
- An aqueous solution of an unknown salt of gold is electrolyzed by a current of 2.75 amps for 3.39 hours. The electroplating is carried out with an efficiency of 93.0%, resulting in a deposit of 21.221 g of gold. a. How many faradays are required to deposi
- A voltaic cell is constructed from a half-cell in which a chromium rod dips into a solution of chromium(III) nitrate, Cr(NO_3)_3, and another half-cell in which a lead rod dips into a solution of lead(II) nitrate, Pb(NO_3)_2. The two half-cells are connec
- A zinc-copper voltaic cell is constructed except that an inert platinum wire is used instead of the salt bridge. Will the cell still produce a potential?
- A voltaic cell is constructed in which the anode is a I?|l2 half cell and the cathode is a F?|F2 half cell. The half-cell compartments are connected by a salt bridge. (Use the lowest possible coeffi
- A 1M solution of Cu(NO_3)_2 is placed in a beaker with a strip of Cu metal. A 1 M solution of SnSO_4 is placed in a second beaker with a strip of Sn metal. A salt bridge connects the two beakers, and
- In voltaic cells, the salt bridge: a. is not necessary in order for the cell to work. b. allows charge balance to be maintained in the cell. c. acts as a mechanism to allow mechanical mixing of the solutions. d. is tightly plugged with firm agar gel throu
- Gold can be obtained by the separation of gold from the anode sludge of the electrolytic purification of copper. (a) Considering the nature of gold and copper, is this source of gold to be expected? Explain. (b) Would finding silver in the sludge also b
- A strip of copper is placed in a 1 M solution of copper nitrate and a strip of silver is placed in a 1 M solution of silver nitrate. The two metal strips are connected to a voltmeter by wires and a sa
- In voltaic cells, the salt bridge: a. is not necessary in order for the cell to work. b. acts as a mechanism to allow mechanical mixing of the solutions. c. allows charge balance to be maintained in the cell. d. is tightly plugged with firm agar gel throu
- A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe2 and Fe3 has a cell potential of 0.726 V. If the silver-silver chlor
- A voltaic cell is constructed in which the anode is a Cu^+|Cu^2+ half cell and the cathode is a Cl^-|Cl_2 half cell. The half-cell compartments are connected by a salt bridge. (Use the lowest possibl
- A car bumper is plated with chromium using chromium (III) ions in a solution. If a current of 54 A flows in the cell for 45 min 30 s, determine the mass of chromium deposited on the bumper.
- Electrolysis is used to silver plate an iron spoon by placing it in a solution containing Ag+ ions and connecting the spoon and silver electrode to a battery. Enter the half-reaction that takes place when the spoon is plated with silver. Include phases. I
- If you were to construct a wet cell and decided to replace the salt bridge with a piece of copper wire, would the cell produce a sustainable current? Explain your answer.
- An electrolytic cell is used to separate copper from the impurities, that is, zinc, iron, silver, gold, and platinum. Can this process be used to separate the metals left after the copper has been removed?
- 1. A 1M solution of Cu(NO_3)_2 is placed in a beaker with a strip of Cu metal. *-A 1 M solution of SnSO_4 is placed in a second beaker with a strip of Sn metal. *-A salt bridge connects the two beak
- In an experiment to electroplate iron with silver, a current of 0.5 amperes was passed through a solution of silver nitrate for one hour. Calculate the mass of silver that was deposited on iron (Ag = 108, 1 Faraday = 96500 coulombs).
- Gold is electroplated by a current of 0.5 A for a period of 35 minutes from a solution containing the Au^3+ ion. What is the mass of gold deposited on the electrode during this period? (At Wt Au = 197 g/mol) A) 0.01088 g B) 0.036 g C) 0.0119 g D) 0.71
- A voltaic cell is constructed in which the anode is a Mg|Mg^2+ half cell and the cathode is a Hg|Hg^2+ half cell. The half-cell compartments are connected by a salt bridge. (Use the lowest possible co
- A voltaic cell is assembled at 298 K with Fe (s) and Fe(NO3)2(aq) in one compartment and Au (s) and Au(NO3)3(aq) in the other. An external wire connects the two electrodes, and a salt bridge containing KNO3 connects the two solutions, Fe^{2+}(aq) + 2 e^-
- 1.) A tissue culture plate experiment is done by adding 3 drops of hydroxylamine solution, 7 drops of ligand solution, and 1 drops of iron solution to a well in the plate. If you want to repeat the ex
- A half-cell that consists of a copper wire in 1.00 M CuNO_3 solution is connected by a salt bridge to a half cell containing a 1.00 M X(II) acetate solution and an electrode of metal X.
- What mass of gold is produced when 13.1 A of current is passed through a gold solution for 26.0 minutes?
- Use the reference information below to solve the following questions. (a) A strip of chromium is immersed in a solution that is 1.0 M in Cr^{3+}, and a strip of gold is immersed in a solution that is 1.0 M in Au^{3+}. (b) A strip of aluminum is immerse
- A standard galvanic cell is constructed with Pb2+|Pb and I2|I- half-cell compartments connected by a salt bridge. As the cell runs, anions will migrate from the Pb2+|Pb compartment to the I2|I- compartment. Is this statement true or false? Explain.
- An electrochemical cell is constructed in which one half-cell contains AgNO_3 solution in contact with an Ag strip, and the other half-cell constrains magnesium nitrate solution, Mg(NO_3)_2, in contac
- How many minutes will it take to electroplate 24.1 g of gold by running 5.00 A of current through a solution of Au+(aq)?
- An electrode is prepared by dipping a silver strip into a solution saturated with silver thiocyanate, AgSCN, and containing 0.10 M SCN^-. The cell potential of the voltaic cell was constructed by connecting this electrode as the cathode to the standard hy
- Part A What mass of Cu(s) is electroplated by running 11.0 A of current through a Cu2+(aq) solution for 4.00 h? Part B How many minutes will it take to electroplate 46.1 g of gold by running 5.00 A
- An inexpensive and accurate method of measuring the the quanity of electricity passing through a circuit is to pass it through a solution of a metal ion and weigh the metal deposited. A silver electro
- The iron content of iron ore can be determined by titration with a standard KMnO4 solution. The iron ore is dissolved in HCl, and all the iron is reduced to Fe2+ ions. This solution is then titrated with KMnO4 solution, producing Fe3+ and Mn2+ ions in
- Part A What mass of Cu(s) is electroplated by running 17.5 A of current through a Cu2+(aq) solution for 4.00 h? Part B How many minutes will it take to electroplate 36.1 g of gold by running 5.00 A of
- A current of 3.05 A is passed through a Fe(NO3)2 solution for 1.50 hours. How much iron is plated out of the solution?
- A current of 3.65 A is passed through a Fe(NO3)2 solution for 1.20 hours. How much iron is plated out of the solution?
- A current of 4.91 A is passed through a Fe(NO_3)_2 solution for 1.40 hours. How much iron is plated out of the solution?
- A current of 5.62 A is passed through a Fe(NO_3)_2 solution for 1.50 hours. How much iron is plated out of the solution? ..... g
- 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
- If a nail made of elemental iron (Fe(s)) is placed in an aqueous solution of soluble palladium(ll) salt [Pd^(2+)(aq), the nail will gradually disappear as the iron enters the solution as Fe^(3+)(aq) a
- A current of 4.90 A is passed through a Fe(NO3)2 solution for 1.10 hours. How much iron is plated out of the solution?
- The iron content of iron ore can be determined by titration with a standard KMnO4 solution. The iron ore is dissolved in HCl, and all the iron is reduced to Fe^2+ ions. This solution is then titrated with a KMnO4 solution, producing Fe^3+ and Mn^2+ ions i
- How many minutes will it take to electroplate 12.1 g of gold by running 5.00 A of current through a solution of Au+(aq)?
- How many minutes will it take to electroplate 38.1 g of gold by running 5.00 A of current through a solution of Au+(aq)?
- How many minutes will it take to electroplate 56.1 g of gold by running 5.00 A of current through a solution of Au+(aq)?
- Which of the following is a solution? a. oil in water b. sand in water c. soil d. pure gold e. steel
- Which of the following is a solution? a. oil in water b. sand in water c. pure gold d. soil e. steel
- Tarnished silver is coated with a layer of Ag2S(s). The coating can be removed by boiling the silverware in an aluminum pan, with some baking soda or salt added to make the solution conductive. Explain this from the point of view of electrochemistry.
- Which is a solution? a. oil in water b. sand in water c. soil d. pure gold e. steel
- If a nail made of elemental iron (Fe(s)) is placed in an aqueous solution of a soluble palladium(II) salt (Pd^2+(aq)). The nail will gradually disappear as the iron enters the solution as Fe^3+(ag) ...
- A current of 4.27 A is passed through a Fe(NO_3)_2 solution for 1.80 hours. How much iron is plated out of the solution?
- You want to ''plate out'' nickel metal from a nickel nitrate solution onto a piece of metal inserted into the solution. Should you use copper or zinc (or can you use either)? Explain.
- To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the ma
- A cell was constructed with two lead electrodes. The electrolyte compartment is 1 M Pb(NO3)2(aq). In the other compartment, NaI has been added to a Pb(NO3)2 solution until a yellow precipitate forms a
- 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
- A salt bridge is composed of _____. a. the salt of the solution in the anode compartment. b. the salt of the solution in the cathode compartment. c. the salts of both solutions in the anode and cathode compartments. d. nonreactive salt.
- A voltaic cell consists of a strip of cadmium metal in a solution of Cd(NO3)2 in one beaker, and in the other beaker, a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around t
- A concentration cell is built based on the following half reaction by using two pieces of silver as electrodes (each weighing 100.0 g), two Ag+ solutions, 0.135 M and 0.419 M (both exactly 1.00 L in v
- A standard cell consisting of a strip of zinc dipped into 1.0 M zinc ion and a strip of copper dipped into 1.0 M copper ion connected by a salt bridge has a potential of 1.10 V. Z n + C u 2 + Z n 2 + + C u If a potential of 0.60 V were assigned to the
- A voltaic cell is constructed. One electrode compartment consists of a zinc strip placed in a solution of Z n ( N O 3 ) 2 , and the other compartment has a nickel strip placed in a solution of N i C l 2 . Which of the of the following occurs at the cat
- One method for recovering metals from their ores is electrodeposition. For example, after passing a current of 18.0 amps through a molten tantalum salt for 38.0 min, workers at a metals processing plant isolated 15.4 g of pure tantalum. What was the oxida
- An excess of finely divided iron is stirred up with a solution that contains Cu2+ ions, and the system is allowed to come to equilibrium. The solid materials are then filtered off and electrodes of solid copper and solid iron are inserted into the remaini
- An electrochemical cell is constructed using two half-cells: Ag(s) in AgNO2(aq) and Fe(s) in Fe(NO3)2(aq). The two half cells are connected by a KNO3 salt bridge and two copper wires from the electrodes to a voltmeter. Based on their respective standard r
- Consider a cobalt-silver voltaic cell that is constructed such that one half-cell consists of the cobalt, Co, electrode immersed in a Co(NO_3)_3 solution, and the other half-cell consists of the silve
- Gold can be extracted from the surrounding rock using a solution of sodium cyanide. While effective for isolating gold, toxic cyanide finds its way into watersheds, causing environmental damage and harming human health. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H
- I----A standard galvanic cell is constructed with Fe3+|Fe2+ and Mn2+|Mn half cell compartments connected by a salt bridge. Which of the following statements are correct? Hint: Refer to a table of sta
- A 0.6505 g sample of ferrite ore is dissolved in nitric acid. All of the iron present is oxidized to iron(III). The solution is filtered and made basic with addition of ammonium hydroxide. The iron precipitates as the iron(III) hydroxide hydrated solid. T
- A student measures the potential of a cell made up with 1.0 M CuSO4 in one solution and 1.0 M AgNO3 in the other. There is a Cu electrode in the CuSO4 and an Ag electrode in the AgNO3. A salt bridge c
- A standard galvanic cell is constructed with Co2+|Co and Ag+|Ag half cell compartments connected by a salt bridge. Which of the following statements are correct? (Choose all that apply.) A- Ag+ is red
- 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
- To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O_2(g) + 2 H_2O(l) to 4 NaAu(CN)_2(aq) + 4 NaOH(aq). Determine
- How many minutes will it take to electroplate 46.1 g of gold by running 5.00 A of current through a solution of
- If liquid gold and liquid silver were placed in graduated cylinder and not allowed to cool, how would the liquid metals layer? Select one or more: a. silver on bottom b. gold on bottom c. gold on top d. the layers would mix