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CHM 101 CHM 101 Past Questions Objective Question

Question

Which of the following affects the value of the solubility product, Ksp, of silver sulphide when it is precipitated by passing hydrogen sulphide into aqueous silver nitrate? 2AgNO₃(aq) + H₂S(g) → Ag₂S(s) + 2HNO₃(aq)
Options
A the addition of aqueous silver nitrate
B the addition of aqueous sodium sulphate
C the presence of an excess of acid
D an increase in temperature
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

The solubility product constant (Ksp) is an equilibrium constant that depends only on temperature. Changes in concentration (addition of reagents) affect the ion product but not the Ksp value itself. Temperature changes alter Ksp.

Hint

Ksp is a type of equilibrium constant; only temperature changes its value.

Question Info