PH of mixture having 0.1 M and 0.1 M is equal to

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

Problem

pH of mixture having 0.1 M

\text{NH}_4\text{OH}

and 0.1 M

\text{NH}_4\text{Cl}

is equal to

\text{p}K_w - \text{p}K_b

. If 0.1 M

\text{NH}_4\text{OH}

and 0.1 M

(\text{NH}_4)_2\text{SO}_4

are taken, the pH will be : (1)

\text{p}K_w - \text{p}K_b

(2)

\text{p}K_w + \text{p}K_b

(3)

\text{p}K_w - \text{p}K_b + \log 2

(4)

\text{p}K_w - \text{p}K_b - \log 2