Question

At a certain temperature, the value of pK_w is 13.4 and the measured pH of a solution is 7. The solution is –

• A. Acidic
• B. Basic
• C. Neutral
• D. Unpredictable

Answer 1

Answer: (B)

Basic

Answer 2

pK_w = 13.4 means for neutral sol

[H⁺] = [OH^–] = 10^–6.7

i.e. pH = 6.7 pH > 6.7 means basic solution.