Question

Ph of 0.2m sodium phenoxide solution will be [pka of phenol=9.95]

Answer 1

Answer:

11.6

Explanation:

7+1/2(pka+logc)

Answer 2

Answer:

pH = 11.625

Explanation:

The formula for finding the pH of a solution given the molarity of the solution and its pKa is given as

pH = 7 + 1/2 (pKa + log M)

Here M is the molarity of the solution.

Now as per information given in question statement

pKa = 9.95

M = 0.2

Putting the values in the formula;

pH = 7 + 1/2 (9.95 + log 0.2)

pH = 7 + 1/2 (9.95  - 0.69)

pH = 7 + 1/2 (9.25)

pH = 11.625