The following is a list of weak acids and their Ka values. HOCl hypochlorous acid 3.5 10 8 ...
Question:
The following is a list of weak acids and their Ka values.
HOCl hypochlorous acid {eq}3.5 \times 10^{-8} {/eq}
H2S hydrogen sulfide {eq}1.1 \times 10^{-7} {/eq}
HCN hydrocyanic acid {eq}4.0 \times 10^{-10} {/eq}
HNO2 nitrous acid {eq}4.5 \times 10^{-4} {/eq}
Write the Ka expression for the strongest acid.
Acidity:
The strength of an acid depends on whether the conjugate base of the acid is stable or not. The higher the stability of the conjugate base, the stronger the acid because that would mean that it will not react with water to form back the acid.
Answer and Explanation: 1
Become a Study.com member to unlock this answer! Create your account
View this answer
To determine which acid is the strongest, the Ka values will be used. The higher the Ka value of an acid, the stronger acid it is. Based on 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:
Get access to this video and our entire Q&A library
Weak Acids: Properties & Examples
from
Chapter 28 / Lesson 13
40K
Learn the definition of weak acids, study common examples, discover the difference between strong and weak acids, and understand how to write weak acid equilibrium equations.
Related to this Question
- The following is a list of weak acids and their Ka values. HOCl hypochlorous acid 3.5 10 8 H2S hydrogen sulfide 1.1 10 7 HCN hydrocyanic acid 4.0 10 10 HNO2 nitrous acid 4.5 10 4 Which acid given above is the strongest? Explain yo
- The following is a list of weak acids and their Ka values. HOCl hypochlorous acid 3.5 10 8 H2S hydrogen sulfide 1.1 10 7 HCN hydrocyanic acid 4.0 10 10 HNO2 nitrous acid 4.5 10 4 Which acid has the strongest conjugate base? Explai
- The following is a list of weak acids and their Ka values. HOCl hypochlorous acid 3.5 10 8 H2S hydrogen sulfide 1.1 10 7 HCN hydrocyanic acid 4.0 10 10 HNO2 nitrous acid 4.5 10 4 List the conjugate bases of each of the weak acids
- The following is a list of weak acids and their Ka values. HOCl hypochlorous acid 3.5 10 8 H2S hydrogen sulfide 1.1 10 7 HCN hydrocyanic acid 4.0 10 10 HNO2 nitrous acid 4.5 10 4 Determine the pH and pOH of a 0.1M solution of each
- 1) Arrange the following acids based on Ka values, from the strongest to the weakest acid.
- Which of the following acids is the WEAKEST? The acid is followed by its Ka value. Which of the following acids is the WEAKEST? The acid is followed by its Ka value. a.HCN, 4.9 x 10^-10 b.HNO_2, 4.
- Which acid below, based on their Ka values, is the weakest acid? Acid 1: Ka = 3.98 x 10-8 Acid 2: Ka = 4.80 x 10-15 Acid 3: Ka = 8.54 x 10-2 Acid 4: Ka = 3.44 x 103 Acid 5: Ka = 3.00 x 104 Acid 6: Ka = 8.99 x 1011
- Classify each of the following acids as strong or weak. If the acid is weak, write an expression for the acid ionization constant(Ka). a) HF b) HCHO2 c) H2SO4 d) H2CO3
- Consider two acids: HCN and HNO2. HNO2 + H2O arrow NO2- + H3O+; Ka = 5.1 x 10-4 HCN + H2O arrow CN- + H3O+; Ka = 2.1 x 10-9 Which of the following statements is/are true? A) HNO2 is a strong acid. B) HNO2 is a stronger acid than HCN. C) HCN is a stronger
- Which acid below, based on their Ka values, is the strongest acid? Acid 1: Ka = 1.67 x 10-1 Acid 2: Ka = 2.29 x 10-4 Acid 3: Ka = 3.67 x 10-1 Acid 4: Ka = 1.85 x 108 Acid 5: Ka = 7.34 x 105 Acid 6: Ka = 8.43 x 106
- Which acid below, based on their Ka values, is the strongest acid? Acid 1: Ka = 7.94 x 10-12 Acid 2: Ka = 1.61 x 1013 Acid 3: Ka = 6.85 x 10-2 Acid 4: Ka = 6.68 x 103 Acid 5: Ka = 8.13 x 106 Acid 6: Ka = 6.77 x 101
- Which acid below, based on their Ka values, is the strongest acid? Acid 1: Ka = 9.15 x 10-11 Acid 2: Ka = 7.16 x 10-7 Acid 3: Ka = 1.94 x 10-2 Acid 4: Ka = 5.22 x 102 Acid 5: Ka = 4.04 x 1013 Acid 6: Ka = 5.78 x 109
- Which of the following are strong acids? Which are weak acids? a. HC_2H_3O_2. b. HClO. c. HCl. d. HNO_3. e. HNO_2. f. HCN.
- Consider the following weak acids and their Ka values: Acetic acid Ka = 1.8 x 10^5 Phosphoric acid Ka1 = 7.5 x 10^3 Hypochlorous acid Ka = 3.5 x 10^8 You are to prepare buffers at pH = 2.8, 4.5, and 7.5. Write the formulas for the respective weak acid
- Consider the following acids: HCN with Ka = 4.9 \times 10^{-10} HF with Ka = 6.8 \times 10^{-4} HIO_3 with Ka = 1.7 \times 10^{-1} HIO with pKa = 10.6 HBr (A) Which acid is the strongest? Which acid is the weakest? (B) Identify the conjugate b
- List the following acids from the strongest acid to the weakest acid. a. 0.10 mol/L HCl(aq) b. 1.0 mol/L HOCl(aq) c. 2.0 x 10-2 mol/L H2SO3(aq) d. 0.50 mol/L HF(aq)
- Rank the following acids in strength (from weakest to strongest): A) HNO_2 B) HOCl C) HCN D) HI
- For the following list of acids, rank the acids in strength from weakest acid to strongest acid. a.PH_3, b.SbH_3, c.NH_3, d.AsH_3
- Given the following acid dissociation constants, which acid has the strongest conjugate base? a. HCN Ka = 6.2 x 10-10 b. HOCl Ka = 3.0 x 10-8 c. HIO3 Ka = 0.17 N
- Classify each of the following as a strong acid or a weak acid, and indicate how each should be written in aqueous solution. a. hydroiodic acid b. acetic acid c. carbonic acid
- Classify each of the following as a Strong acid (sa) or a Weak acid (wa) and indicate how each should be written in aqueous solution. 1. hydrocyanic acid 2. nitric acid 3. sulfurous acid
- Classify each of the following as a Strong acid or a Weak acid and indicate how each should be written in aqueous solution. 1. hydrocyanic acid 2. nitric acid 3. sulfurous acid
- For the following list of acids, rank the acids in strength from weakest acid to strongest acid. FCH_2OH, F_2CHOH, CH_3OH, F_3COH
- Which of the following are strong acids and weak acids. Explain why they are weak or strong. H2CO3 HNO2 NaOH LiBr HF CaCl2 Ba(OH)2 KNO3 Mg(OH)2 H2SO4 HC2H3O2 HNO3 NH3 HCL
- Classify each of the following as strong acid (sa) or weak acid (wa) and indicate how each should be written in aqueous solution. 1. acetic acid 2. nitrous acid 3. hydrofluoric acid
- Write chemical equations for the acid ionization of each of the following weak acids (express these in terms of H_3O^+). a. HBrO (hypobromous acid). b. HClO_2 (chlorous acid). c. HNO_2 (nitrous acid). d. HCN (hydrocyanic acid).
- Classify each of the following as a Strong acid (sa) or a Weak acid (wa) and indicate how each should be written in aqueous solution. 1. carbonic acid 2. hydrosulfuric acid 3. hydrobromic acid
- Given the following acids and their corresponding Ka values, predict which acid were the strongest conjugate base? HF Ka=7.1e-4 HNO_2 Ka= 4.0e-4 Hc_2H_3O_2 Ka= 1.8e-5 HOBr Ka = 3.5e-8 All will be equa
- Suppose you have two acids. Acid 1 has a value of Ka = 1.4 x 10-8, and acid 2 has a value of Ka = 3.3 x 10-4. Which of the two acids is stronger?
- List the acids from the strongest acid to the weakest acid. a. 2.5 mol/L HF(aq) b. 0.25 mol/L HCl(aq) c. 0.10 mol/L H3PO4(aq) d. 0.020 mol/L H2SO3(aq)
- The Ka values for several weak acids are given below. Which acid (and its conjugate base) would be the best buffer at pH 8.0? A. Formic acid: Ka = 1.8 x 10-4 B. Acetic acid: Ka = 1.8 x 10-5 C. HEPES:
- Does a higher or lower Ka value indicate a strong acid? Explain why. Does a higher or lower pKa value indicate a weak acid?
- In a 0.20 M solution of a monoprotic weak acid, H+ = 9.86 x 10-4 M. What is the Ka of this weak acid?
- Indicate whether each of the following acids is a strong acid or a weak acid. A. HI. B. HCN. C. HOCl.
- List the following weak acids from the acid with the weakest conjugate base to strongest conjugate base. a. HCN(aq) b. H2CO3(aq) c. HNO2(aq) d. H2SO3(aq)
- Rank the following acids from weakest acid to strongest acid. a. HCl b. H3P c. H4Si d. H2S
- Rank the following Bronsted acids from strongest to weakest: H-SH, H-CH_3, H-NH_2, H-F, H-I.
- List the following from the strongest acid to the weakest acid. a. 0.10 mol/L HCl(aq) b. 1.0 mol/L HOCl(aq) c. 2.0 x 10-2 mol/L H2SO3(aq) d. 0.50 mol/L HF(aq)
- Rank the following in order of decreasing acid strength. a. HCl b. HClO c. HNO2 d. HCN
- For each of the weak acids listed below, a) write a balanced equilibrium equation showing the dissociation, and b) write the equilibrium constant expression, and c) give the Ka value. 1) HClO2 (aq) 2) HC7H5O2 (aq) (also written as, C6H5COOH) 3) HIO4 (a
- Classify each of the following as a strong or weak acid or base. a. HF. b. KOH. c. HClO_4. d. HIO.
- Which of the following is a weak acid? a. HBr b. H_2SO_4 c. HNO_3 d. HNO_2 e. KOH
- Classify each of the substances as a weak acid, strong acid, weak base, or strong base in the Arrhenius acid-base sense. a. HNO3 b. ammonia c. LiOH d. phosphorous acid e. H2SO4 f. nitrous acid g
- Classify each of the following as a strong acid or a weak acid.
- Is HNO2 a strong acid, a weak acid, or a species with negligible acidity? Write the formula of its conjugate base and indicate whether the conjugate base is a strong base, a weak base, or a species with negligible basicity.
- Order the following from strongest to the weakest acid? a. HClO_2. b. H_2O. c. NH_4. d. HClO_4.
- Classify each of the following acids as strong or weak. HNO3 HCl HBr H2SO3
- Classify each of the following as a strong acid or a weak acid and indicate how each should be written in aqueous solution. 1. nitric acid ............ (strong/weak) in a solution this acid should be written as ................ 2. phosphoric acid ........
- A 0.30 M solution of a weak acid (HA) has an (H+) of 1.66 x 10-4 M. What is the Ka of this weak acid?
- List the following compounds in order from strongest acid to weakest acid: CH_3CH_2OH, CH_3CH_2NH_2, CH_3CH_2SH, and CH_3CH_2CH_3. Rank the following in order from strongest to weakest acid. CH_3CH_
- Which weak acid would be best to use when preparing a buffer solution with a pH of 9.30? a. An acid with Ka = 3.2 x 10^-11 b. An acid with Ka = 7.9 x 10^-5 c. An acid with Ka = 5.2 x 10^-10 d.
- Which weak acid would be best to use when preparing a buffer solution with a pH of 8.50? 1) an acid with Ka = 3.3 x 10^{-9} 2) an acid with Ka = 5.0 x 10^{-4} 3) an acid with Ka = 6.3 x 10^{-6} 4)
- Listed below are five acids and their ionization constants. List their formulas in order of decreasing acid strength (i.e., strongest first).
- Classify each of the following substances as either a strong or weak acid, strong or weak base, or a soluble or insoluble salt. H2SO3 KNO3 KOH NH3 CH3COOH strong acid weak acid strong base weak base s
- Classify each of the following as a strong acid, a weak acid, a strong base, or a weak base. a. HCl b. HCOOH c. NaOH d. CH3NH2
- Which of the following acids (listed with Ka values) and their conjugate base would form a buffer with a pH of 2.34? a. HC_{7}H_{5}O_{2}, Ka = 6.5 x 10^{-5} b. HF, Ka = 3.5 x 10^{-4} c. HClO, Ka = 2.9 x 10^{-8} d. HCN, Ka = 4.9 x 10^{-10} e. HClO_{2}, Ka
- Classify each of the following as a strong acid, weak acid, strong base, or weak base in aqueous solution. a. HNO2 b. HNO3 c. CH3NH2 d. NaOH e. NH3 f. HF g. COOH h. CaOH2 i. H2SO4
- The acid strength decreases in the series: HBr less than HSO_{4}^{-} greater than CH_{3}COOH greater than HCN greater than HCO_{3}^{-}. Which of the following is the weakest base? a. SO_{4}^{2-} b. CO_{3}^{2-} c. CH_{3}COO^{-} d. Br^{-} e. CN^{-}
- Circle the strong acids in the list of acids given below. CH3COOH HNO2 H2CO3 HBr HCl NH4Cl HI HClO4 HNO3 H2SO4 HF HCOOH
- The Ka values for several weak acids are given below. Which acid (and its conjugate base) would be the best buffer at pH 3.7? ...
- Order the following acids from the strongest to the weakest acid. HClO2, H2O, NH4^+, HClO4.
- Identify the weak monoprotic acid. A. HCOOH B. H2CO3 C. KBr D. HI E. NaOH
- The weak acid HA is 2.0% ionized (dissociated) in a 0.20 M solution. What is the Ka for this acid?
- Consider the list of the following compounds: C_6H_5COOH, HNO_2, NaOH, H_2CO_3, CH_4. Which of the following statements is correct? (a) Only one weak acid is present in the list. (b) Two (and only two) weak acids are present in the list. (c) Three (and on
- A 0.20 M solution of the weak acid HA has (H+) = 1.4 x 10-4 M. What is the acid ionization constant, Ka, for this acid?
- Classify NaNO2 into one of the following categories: strong acid, strong base, weak acid, weak base, or none of above. (Note: Ka of HNO2 = 4.5 x 10-4) a. Strong Acid b. Strong Base c. Weak Acid d.
- Which has the larger numerical value? (a) The pK_a of a strong acid or the pK_a of a weak acid (b) The K_a of a strong acid or the K_a of a weak acid
- Which acid ionization constant would indicate the weakest acid? a. 3.5 x 10-4 b. 4.6 x 10-4 c. 1.8 x 10-5 d. 1.5 x 10-2
- Classify each of the following species as a weak or strong acid: a) HNO3 b) HF c) H2SO4 d) HSO4- e) H2CO3 f) HCO3- g) HCl h) HCN i) HNO2
- Acid A has a Ka of 1.6 x 10-3 M. Acid B has a Ka of 9 x 10-4 M. Acid C has a Ka of 2 x 10-6 M. Acid D has a Ka of 3 x 10-4 M. a. Arrange the acids in order of increasing acid strength from weakest to strongest. b. Which acid has the smallest pKa value?
- A weak acid has a K_a = 3.8 times 10^-9. What is pK_a for this acid?
- Label each of the following as a strong or weak acid or base: a. H_3PO_4. b. HClO. c. HClO_4. d. Sr(OH)_2.
- What is the ionization constant at 25 degrees Celcius for the weak acid CH3NH3, the conjugate acid of the weak base CH3NH2?
- which of the compounds listed below would be the strongest acid? a. HNO3 b.H3N c.HNO2 d.HF e.CH3COOH
- 1) A weak acid has KA = 8.49 x 10^{-4}. What is the pKB of its conjugate base? 2) A weak base has KB = 9.49 x 10^{-3}. What is the pKB of this base? 3) Consider a weak acid "HA". What is the percent ionization of a 0.649 mol/L solution of HA? The KA of
- Consider the Ka values for the following acids: Cyanic acid, HOCN, 3.5 \times 10^{-4} Formic acid, HCHO_2, 1.7 \times 10^{-4} Lactic acid, HC_3H_5O_3, 1.3 \times 10^{-4} Propionic acid, HC_3H_5O_2, 1.3 \times 10^{-5} Benzoic acid, HC_7H_5O_2, 6.3 \times 1
- Rank the following acids from strongest to weakest. a. HClO2 b. HClO c. HNO3 d. HClO4 e. HBrO
- Determine the pH of each of the following solutions. (a) 0.544 M hypochlorous acid (weak acid with K_a = 3e^{-08}). (b) 0.804 M hydrosulfuric acid (weak acid with K_a = 9.5e^{-08}). (c) 0.354 M pyridine (weak base with K_b = 1.7e^{-09}).
- Determine (H3O+) in a 0.38 M H2CO3 acid solution. If the acid is weak, indicate the value that (H3O+) is less than.
- Carbonic acid is most accurately described as which of the following? A) monoprotic weak acid B) monoprotic strong acid C) diprotic weak acid D) diprotic strong acid
- Given the following K_a information, identify the strongest acid and strongest base. Explain your answers: 6.9 \times 10^{-4} HF 4.4 \times 10^{-7} H_2CO_3 5.6 \times 10^{-10} NH_4^+ 1.8 \times 10^{-5} HC_2H_3O_2
- Hypochlorous acid is a weak acid, where HClO goes to H+ + ClO-. The Ka is 2.9 x 10-8. Calculate Delta G for the acid dissociation reaction at 298 K.
- Arrange the following by increasing acid strength. a. HClO b. CH3COOH c. HNO2 d. HCl
- Classify each of the following as a strong acid, a weak acid, a strong base, or a weak base. a. HNO3 b. LiOH c. H2CO3 d. C5H5N
- HNO2 is a weak acid with Ka = 4.0 x 10-4. When HNO2 is titrated with NaOH (a strong base), the pH at the equivalence point will be: a. acidic b. neutral c. basic d. not enough information
- Which of the following acids below have the highest acid strength? Arrange them from lowest to highest. arsenic acid, hypobromous acid, propanoic acid, chlorous acid
- Which one of the following acids has the weakest conjugate base? Acid 1: K a = 2 10 5 Acid 2: K a = 4 10 7 Acid 3: K a = 3 10 6 Acid 4: K a = 1 10 4
- Which of the following is the strongest Bronsted Acid? R-CO_2H is a carboxylic acid and R-SO_3H is a sulfonic acid. Draw these two as Lewis structures and the conjugate base anions. (Image)
- What is the ionization constant at 25 degrees Celsius for the weak acid CH3NH3, the conjugate acid of the weak base CH3NH2?
- List the following acids in order of strongest to weakest. (a) 0.10 M H C l ( a q ) (b) 1.0 M H O C l ( a q ) (c) 2.0 10 2 M H 2 S O 3 ( a q ) (d) 0.50 M H F ( a q )
- Which one of the following is not a weak acid? a. H_2SO_4. b. HF. c. HNO_2. d. HCOOH. e. HClO_3.
- Classify each acid as strong or weak. a. HF b. HBr c. H2SO3
- Rank the given compounds based on their relative Bronsted acidities. strongest Bronsted acid Weakest Bronstead acid H-F, H-CH_3, H-Br, H-NH_2, H-OH
- Consider two acids: HCO_2H (formic acid, pK_a = 3.8) and pivalic acid ((CH_3)_3CCO_2H, pK_a = 5.0). (a) Which acid has the larger K_a? (b) Which acid is the stronger acid? (c) Which acid forms the stronger conjugate base? (d) When each acid is dissolved i
- Butanoic acid (HC_4H_7O_2) is a weak acid that dissociates in water as follows. HC_4H_7O_2(aq) + H_2O(l) ? H_3O^+(aq) + C_4H_7O_2^-(aq) The acid-dissociation constant (K_a) for butanoic acid is 1.5
- Consider the Ka values for the following acids:
- Which of the following molecules will exist in an ionized form at pH = 9.0 (look up Ka/Kb values from the last exam equation sheet if needed)? Aniline (C6H5NH2) Hypochlorous acid (HClO) Phenol (C6H
- Consider the following acids: Acid Ka (25 degrees Celsius) HA 1.6 * 10^{-5} H2B 4.0 * 10^{-7} HC 1.0 * 10^{-4} H3D 8.0 * 10^{-3} Conjugate bases of each acid: A^- HB^- C^- H2D^- Which conjugate base would be the strongest?
- In a triprotic acid, which Ka has the highest value? a. Ka1 b. Ka2 c. Ka3 d. all Ka have the same value
- Organize the following acids starting with the strongest. a. HF b. HCN c. CH3COOH d. HCl
Explore our homework questions and answers library
Browse
by subject