Question

Calculate the pH of buffer solution containing 0.05 mol NaF per litre and 0.015 mol HF per litre.

[Ka = 7.2 × 10-4 for HF]​

Answer 1

Given:

The pH of buffer solution containing 0.05 mol NaF per liter and 0.015 mol HF per liter.

To find:

$p^{H}$ the value.

Step-by-step explanation:

The equation,

$p^{OH} =log\frac{[Salt]}{[Base]} -logK_{b}$

$=log\frac{0.015}{0.05} -log 7.2*10^{-4}$

$=2.6198$

$p^{H} =(14-2.6198)$$=11.3802$

Answer:

$p^{H}$ the value $11.3802$.

Answer 2

Answer:

Step-by-step explanation: