Question

Which weak acid would be best to use when preparing a buffer solution with a pH of 8.70? an acid with Ka = 4.0 x 10^-6 an acid with Ka = 0.00032 an acid with Ka = 2.5 x 10^-5 an acid with Ka = 1.3 x 10^-10 an acid with Ka = 3.2 x 10^-7 an acid with Ka = 2.1 x 10^-9

          Which weak acid would be best to use when preparing a buffer solution with a pH of 8.70?

an acid with Ka = 4.0 x 10^-6
an acid with Ka = 0.00032
an acid with Ka = 2.5 x 10^-5
an acid with Ka = 1.3 x 10^-10
an acid with Ka = 3.2 x 10^-7
an acid with Ka = 2.1 x 10^-9

Which weak acid would be best to use when preparing a buffer solution with a pH of 8.70?

an acid with Ka = 4.0 x 10^-6
an acid with Ka = 0.00032
an acid with Ka = 2.5 x 10^-5
an acid with Ka = 1.3 x 10^-10
an acid with Ka = 3.2 x 10^-7
an acid with Ka = 2.1 x 10^-9

Added by Allison P.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Jean Gephart

09/17/2023

Step 1

We know that the pH of a buffer solution can be calculated using the Henderson-Hasselbalch equation: $$ pH = pK_a + \log \frac{[A^-]}{[HA]} $$ Show more…

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Which weak acid would be best to use when preparing a buffer solution with a pH of 8.70? - An acid with Ka = 4.0 x 10^-6 - An acid with Ka = 0.00032 - An acid with Ka = 2.5 x 10^-5 - An acid with Ka = 1.3 x 10^-10 - An acid with Ka = 3.2 x 10^-7 - An acid with Ka = 2.1 x 10^-9