Question

If the pKa of a weak acid is equal to 5, what is the approximate percent of A- at pH 4? 1% 99% 91% 9%

Name: if the pka of a weak acid is equal to 5 what is the approximate percent of a at ph 4 1 99 91 9 79912
Uploaded: 2023-08-22T12:40:44-08:00
Duration: 6 min 35 s
Channel: Sri K
Description: if the pka of a weak acid is equal to 5 what is the approximate percent of a at ph 4 1 99 91 9 79912

          If the pKa of a weak acid is equal to 5, what is the approximate percent of A- at pH 4?
1%
99%
91%
9%

Added by Manuela M.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Sri K

08/22/2023

Step 1

The equation is: \[ \text{pH} = \text{pKa} + \log\left(\frac{[\text{A}^-]}{[\text{HA}]}\right) \] Show more…

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If the pKa of a weak acid is equal to 5, what is the approximate percent of A- at pH 4? 1% 99% 91% 9%

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If the pKa of a weak acid is equal to 5, what is the approximate percent of A- at pH 4? 1% 99% 91% 9%

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