# Worksheet on Solubility Product

Solubility product is a constant given to a solution containing sparingly soluble salts. It is denoted by ksp . Solubility product constants are also used to describe saturated solutions of ionic compounds having relatively low solubility.

Here, you can find some questions related to “Solubility Products” and their answers:

Questions:

1. Which of the following compounds is most soluble in water?

(a)     ZnS

(b) $BiS_3$

(c)    MnS

(d) $Ag_2S$

2. If solubility product of $HgSO_4$ is $6.4 \times 10^{-5}$ then solubility is:

(a) $6.4 \times 10^{-5}$

(b) $8 \times 10^{-3}$

(c) $6.4 \times 10^{-6}$

(d) $8 \times 10^{-8}$

3. The solubility product of NaCl is $1.5 \times 10^{-10}$ at 298 K. its solubility in mol $L^{-1}$ would be:

(a) $3.5 \times 10^{-5}$

(b) $1.5 \times 10^{-5}$

(c) $1.2 \times 10^{-5}$

(d) $9.7 \times 10^{-3}$

4. The solubility product of a binary weak electrolyte is $4 \times 10^{-10}$ at 298 K. Its solubility in mol $dm^{-3}$ at the same temperature is:

(a) $2 \times 10^{-4}$

(b) $1.4 \times 10^{-20}$

(c) $8 \times 10^{-15}$

(d) $4 \times 10^{-5}$

5. The solubility product of nickel arsenide is $5 \times 10^{-8}$. its solubility is:

(a) $3.5 \times 10^{-5} mol L^{-1}$

(b) $2.2 \times 10^{-4} mol L^{-1}$

(c) $9.2 \times 10^{-6} mol L^{-1}$

(d) $1.8 \times 10^{-2} mol L^{-1}$

6. The solubility product of sparingly soluble salt $AX_2$ is $3.2 \times 10^{-11}$. Its solubility (in mol $L^{-1}$) is:

(a) $3.4 \times 10^{-4}$

(b) $5 \times 10^{-6}$

(c) $5.6 \times 10^{-6}$

(d) $4.5 \times 10^{-4}$

7. The solubility of CuBr is $2 \times 10^{-4}mol L^{-1} at 25^0 C$ . the Ksp value for CuBr is:

(a) $4 \times 10^{-6}$

(b) $4 \times 10^{-16}$

(c) $4 \times 10^{-11}$

(d) $4 \times 10^{-8}$

8. The solubility of $MX_2$ type electrolyte is $0.5 \times 10^{-4} mol L^{-1}$. The value of Ksp of the electrolyte is:

(a) $1.35 \times 10^{-13}$

(b) $2.5 \times 10^{-10}$

(c) $5 \times 10^{-13}$

(d) $5 \times 10^{-18}$

1.(a)     2. (b)     3. (c)     4. (a)     5. (b)

6. (c)     7. (d)     8. (c)

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