Question

At $25^{\circ} C$, what will be the solubility of silver carbonate in $0.1 \,M\, Na _{2} CO _{3}$ solution. At this temperature, $K _{ sp }$ of silver carbonate is $4 \times 10^{-13}$

• A. $2 \times 10^{-7}$
• B. $2 \times 10^{-6}$
• C. $10^{-6}$
• D. $10^{-7}$

Answer 1

Answer: (C)

$\left[ Ag ^{2+}\right]\left[ CO _{3}^{2-}\right] K _{ sp }=4 \times 10^{-13}$

$(2 s)^{2} \times 0.1=4 \times 10^{-13}$

$(2 s)^{2}=4 \times 10^{-12}$

$2 s=2 \times 10^{-6}$

$s=1 \times 10^{-6} \,M$