Chemistry

Problem

The solubility of CoS in 0.10M

\text{H}_2 \text{S}

and 0.15M

\text{H}^+

solution is

a \times 10^{-6} M

. The value of

a

is..... Given

K

for

\text{H}_2 \text{S} \rightleftharpoons 2 \text{H}^+ + \text{S}^{2-}

1 \times 10^{-21}

and

K_{sp}

\text{CoS} = 3.11 \times 10^{-26}