Ask Question
9 November, 20:08

What is the pH of a buffer solution that is 0.211 M in hypochlorous acid (HClO) and 0.111 M in sodium hypochlorite? The Ka of hypochlorous acid is 3.8 ⋅ 10-8. What is the pH of a buffer solution that is 0.211 M in hypochlorous acid (HClO) and 0.111 M in sodium hypochlorite? The Ka of hypochlorous acid is 3.8 x 10-8.

a. 7.7

b. 0

c. 7.14

d. 14.28

e. 9.05

f. 6.86

+2
Answers (1)
  1. 9 November, 20:28
    0
    c. 7.14

    Explanation:

    The buffer solution is formed by a weak acid (hypochlorous acid, HClO) and its conjugate base (hypochlorite ClO⁻, coming from sodium hypochlorite NaClO). We can calculate the pH using the Henderson-Hasselbach equation.

    pH = pKa + log [base]/[acid]

    pH = - log 3.8 * 10⁻⁸ + log 0.111/0.211

    pH = 7.14
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “What is the pH of a buffer solution that is 0.211 M in hypochlorous acid (HClO) and 0.111 M in sodium hypochlorite? The Ka of hypochlorous ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers