Question

For each of the salts on the left, match the salts on the right that can be compared directly, using Ksp values, to estimate solubilities.

(If more than one salt on the right can be directly compared, include all the relevant salts by writing your answer as a string of characters without punctuation, e.g, ABC.)

1. manganese(II) sulfide ___ A. BaCO₃
2. calcium phosphate ___ B. Ca(OH)₂
C. Fe₂S₃
D. Zn(OH)₂

Write the expression for K in terms of the solubility, s, for each salt, when dissolved in water.

Answer 1

The salts that can be directly compared with manganese(II) sulfide using Ksp values are Fe2S3 and Zn(OH)2. The salt that can be directly compared with calcium phosphate using Ksp values is BaCO3.

Step-by-step explanation:

A. The salts that can be directly compared with manganese(II) sulfide (MnS) using Ksp values to estimate solubilities are Fe2S3 and Zn(OH)2.
B. The salt that can be directly compared with calcium phosphate (Ca3(PO4)2) using Ksp values to estimate solubilities is BaCO3.

The solubility product expression, Ksp, represents the equilibrium constant for the dissolution of a sparingly soluble salt. It is calculated by multiplying the concentrations of the ions in the solution raised to the power of their respective coefficients in the balanced equation. For example, for manganese(II) sulfide (MnS), the Ksp expression would be: Ksp = [Mn2+][S2-].