Homework Answers
as we know more the H+ ions present in the solution lower the pH value.
HClO2 is stronger acid themn all remaining so HCLO2 gives more H+ ions so lesser pH.
so answer = option b = HClO2
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Answer is b
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Which of the following 0.05 M solutions of the following acids has...
Help please and show all work! 2. The pk, of hypochlorous acid (HOCI) is 7.53. (a) Calculate the k. of HOCI. Given t...
Help please and show all work!
2. The pk, of hypochlorous acid (HOCI) is 7.53. (a) Calculate the k. of HOCI. Given that the pk, of hypobromous acid (HOBr) is 8.63, which acid is stronger, and how do you know? (b) Write the reaction (with physical states) that corresponds to the K, of HOCI. Identify the weak acid among the reactants (label it WA) and its conjugate base among the products (label it CB). (c) Calculate [H30*] (or "[H]") and...
Problem Set 15 CHEM 1252 November 10, 2019 Textbook Reading Assignment: 15.5-8 [and see App. 5...
Problem Set 15 CHEM 1252 November 10, 2019 Textbook Reading Assignment: 15.5-8 [and see App. 5 for Kor k, values] Additional Practice Problems: 15.51,57,59,61,63,65-66,69-71,77-78,80,84 1. Calculate the concentration of an aqueous HNO solution that has a pH of 2.45. 2. The på, of hypochlorous acid (HOCI) is 7.53. (a) Calculate the K. of HOCI. Given that the pk, of hypobromous acid (HOBr) is 8.63, which acid is stronger, and how do you know? (b) Write the reaction (with physical states)...
need help with 42 & 44 I am trying to figure out how to make a...
need help with 42 & 44
I
am trying to figure out how to make a desired buffer
42. What volumes of 0.50 M HNO2 and 0.50 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.55? 43. Consider a solution that contains both C5H5N and C5H5NHNO3. Calculate the ratio (C3H5N]/[C3H5NH+] if the solution has the following pH values: a. pH = 4.50 c. pH = 5.23 l g de to b. pH...
Determine the pH of each of the following solutions. (a) 0.807 M hypochlorous acid (weak acid...
Determine the pH of each of the following solutions. (a) 0.807 M hypochlorous acid (weak acid with Ka = 3e-08). (b) 0.672 M hypoiodous acid (weak acid with Ka = 2.3e-11). (c) 0.807 M pyridine (weak base with Kb = 1.7e-09).
Determine the pH of each of the following solutions. Determine the pH of each of the...
Determine the pH of each of the following solutions.
Determine the pH of each of the following solutions. (a) 0.211 M hypobromous acid (weak acid with Ka = 2.5e-09) Ка 3 Зе-08). (b) 0.235 M hypochlorous acid (weak acid with Ka (c) 0.586 M pyridine (weak base with K 1.7e-09)
Exercise 1: Consider the following information for a series of solutions of weak acids, HA: Weak...
Exercise 1: Consider the following information for a series of solutions of weak acids, HA: Weak acid PK, К. If [HA], is... then [H3O+]E ... and pH HCOOH 3.74 1.8 x 10-4 0.100 M 4.2 x 10² M 2.38 HNO2 3.37 4.2 x 10-4 0.100 M 6.3 x 10-M 2.20 HCN 9.20 6.3 x 10-10 0.100 M 7.9 x 10ⓇM 5.10 4.23 0.100 M 5.9 10-M HOCI 7.46 3.5 x 10-8 0.200 M 8.3 x 10M 4.07 0.400 M 1.2...
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa =...
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa = 4.75) B) HF (PK:= 3.45) C) H3PO4 (pKal = 2.12) D) HCIQ (Ka=2.00) E) Since all are acids, the pH is the same for all solutions. 5. Which one of the following salts gives an acidic aqueous solution? A) CsNO3 B) CaCl2C ) LiF D) Cr(CIO4)3 E) NaCH3CO2 6. 7. All of the following are strong acids except A) HCIQB) HC104 C) HI D)...
Name Formula К. Acetic acid CH3COOH 1.8 x 10-5 Formic acid HCOOH 3.0 x 10 Hydrazoic...
Name Formula К. Acetic acid CH3COOH 1.8 x 10-5 Formic acid HCOOH 3.0 x 10 Hydrazoic acid HN3 1.0 x 10-5 Hydrocyanic acid HCN 6.2 x 10-10 Hypochlorous acid HOCI 6.8 x 10-8 Nitrous acid HNOL 7.4 x 104 20. (7 pts) Use the table above to answer the following questions. A. Rank the following solutions in order from the lowest to highest pH. 0.10 M CH3COO- 0.10 M HCOO 0.10 M N 0.10 M OCI pH value: B. Write...
Find the pH of each of the following solutions of mixtures of acids. 8.0×10−2 M in...
Find the pH of each of the following solutions of mixtures of acids. 8.0×10−2 M in HNO3 and 0.165 M in HC7H5O2, 1.5×10−2 M in HBr and 2.0×10−2 M in HClO4, 9.5×10−2 M in HF and 0.230 M in HC6H5O, 0.110 M in formic acid and 4.5×10−2 M in hypochlorous acid PLEASE show work
14. Given equal concentrations of the following acids, which exhibits the greatest amount of ionization in...
14. Given equal concentrations of the following acids, which exhibits the greatest amount of ionization in water? (3 pts) A) nitrous acid B) chlorous acid C) ascorbic acid D) hydrobromic acid E) citric acid 15. Which solution has the highest pH? (3 pts) A) 0.10 M HBr(aq) B) 0.10 M HI (aq) C) 0.10 MHF (aq) D) 0.10 M HCl(aq) E) 0.10 M HClO4(aq) 16. Which of the following solutes, dissolved in 1.0 kg of water, would be expected to...
Help please and show all work!
2. The pk, of hypochlorous acid (HOCI) is 7.53. (a) Calculate the k. of HOCI. Given that the pk, of hypobromous acid (HOBr) is 8.63, which acid is stronger, and how do you know? (b) Write the reaction (with physical states) that corresponds to the K, of HOCI. Identify the weak acid among the reactants (label it WA) and its conjugate base among the products (label it CB). (c) Calculate [H30*] (or "[H]") and...
Problem Set 15 CHEM 1252 November 10, 2019 Textbook Reading Assignment: 15.5-8 [and see App. 5 for Kor k, values] Additional Practice Problems: 15.51,57,59,61,63,65-66,69-71,77-78,80,84 1. Calculate the concentration of an aqueous HNO solution that has a pH of 2.45. 2. The på, of hypochlorous acid (HOCI) is 7.53. (a) Calculate the K. of HOCI. Given that the pk, of hypobromous acid (HOBr) is 8.63, which acid is stronger, and how do you know? (b) Write the reaction (with physical states)...
need help with 42 & 44
I
am trying to figure out how to make a desired buffer
42. What volumes of 0.50 M HNO2 and 0.50 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.55? 43. Consider a solution that contains both C5H5N and C5H5NHNO3. Calculate the ratio (C3H5N]/[C3H5NH+] if the solution has the following pH values: a. pH = 4.50 c. pH = 5.23 l g de to b. pH...
Determine the pH of each of the following solutions.
Determine the pH of each of the following solutions. (a) 0.211 M hypobromous acid (weak acid with Ka = 2.5e-09) Ка 3 Зе-08). (b) 0.235 M hypochlorous acid (weak acid with Ka (c) 0.586 M pyridine (weak base with K 1.7e-09)
Exercise 1: Consider the following information for a series of solutions of weak acids, HA: Weak acid PK, К. If [HA], is... then [H3O+]E ... and pH HCOOH 3.74 1.8 x 10-4 0.100 M 4.2 x 10² M 2.38 HNO2 3.37 4.2 x 10-4 0.100 M 6.3 x 10-M 2.20 HCN 9.20 6.3 x 10-10 0.100 M 7.9 x 10ⓇM 5.10 4.23 0.100 M 5.9 10-M HOCI 7.46 3.5 x 10-8 0.200 M 8.3 x 10M 4.07 0.400 M 1.2...
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa = 4.75) B) HF (PK:= 3.45) C) H3PO4 (pKal = 2.12) D) HCIQ (Ka=2.00) E) Since all are acids, the pH is the same for all solutions. 5. Which one of the following salts gives an acidic aqueous solution? A) CsNO3 B) CaCl2C ) LiF D) Cr(CIO4)3 E) NaCH3CO2 6. 7. All of the following are strong acids except A) HCIQB) HC104 C) HI D)...
Name Formula К. Acetic acid CH3COOH 1.8 x 10-5 Formic acid HCOOH 3.0 x 10 Hydrazoic acid HN3 1.0 x 10-5 Hydrocyanic acid HCN 6.2 x 10-10 Hypochlorous acid HOCI 6.8 x 10-8 Nitrous acid HNOL 7.4 x 104 20. (7 pts) Use the table above to answer the following questions. A. Rank the following solutions in order from the lowest to highest pH. 0.10 M CH3COO- 0.10 M HCOO 0.10 M N 0.10 M OCI pH value: B. Write...
14. Given equal concentrations of the following acids, which exhibits the greatest amount of ionization in water? (3 pts) A) nitrous acid B) chlorous acid C) ascorbic acid D) hydrobromic acid E) citric acid 15. Which solution has the highest pH? (3 pts) A) 0.10 M HBr(aq) B) 0.10 M HI (aq) C) 0.10 MHF (aq) D) 0.10 M HCl(aq) E) 0.10 M HClO4(aq) 16. Which of the following solutes, dissolved in 1.0 kg of water, would be expected to...
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