Question

Which of the following weak acid–conjugate base pairs would buffer most effectively at pH 5.2? boric acid (Ka = 5.8 !! 10?10) and its conjugate base iodic acid (Ka = 1.7 !! 10?1) and its conjugate base hypobromous acid (Ka = 2.8 !! 10?9) and its conjugate base chloroacetic acid (Ka = 1.4 !! 10?3) and its conjugate base acetic acid (Ka = 1.8 !! 10?5) and its conjugate base

          Which of the following weak acid–conjugate base pairs would buffer most effectively at pH 5.2?

boric acid (Ka = 5.8 !! 10?10) and its conjugate base
iodic acid (Ka = 1.7 !! 10?1) and its conjugate base
hypobromous acid (Ka = 2.8 !! 10?9) and its conjugate base
chloroacetic acid (Ka = 1.4 !! 10?3) and its conjugate base
acetic acid (Ka = 1.8 !! 10?5) and its conjugate base

Which of the following weak acid–conjugate base pairs would buffer most effectively at pH 5.2?

boric acid (Ka = 5.8 !! 10?10) and its conjugate base
iodic acid (Ka = 1.7 !! 10?1) and its conjugate base
hypobromous acid (Ka = 2.8 !! 10?9) and its conjugate base
chloroacetic acid (Ka = 1.4 !! 10?3) and its conjugate base
acetic acid (Ka = 1.8 !! 10?5) and its conjugate base

Added by Inmaculada M.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Adi S

05/31/2022

Step 1

Step 1: Calculate the pH of the buffer solution using the Henderson-Hasselbalch equation: pH = pKa + log([A-]/[HA]) Show more…

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Which of the following weak acid–conjugate base pairs would buffer most effectively at pH 5.2? boric acid (Ka = 5.8 !! 10−10) and its conjugate base iodic acid (Ka = 1.7 !! 10−1) and its conjugate base hypobromous acid (Ka = 2.8 !! 10−9) and its conjugate base chloroacetic acid (Ka = 1.4 !! 10−3) and its conjugate base acetic acid (Ka = 1.8 !! 10−5) and its conjugate base