**Express Ksp in terms of molar solubility, x, for a salt with a formula of**

**1. AB(s)**

**2. AB2(s)**

**3. AB3(s)**

**4. A3B2(s)**

**Concepts and reason**

**Solubility:**

Solubility is defined as the maximum amount of solute dissolved in a given amount of solvent to make a saturated solution at a particular temperature.

**Molar solubility:**

The molar solubility is the number of moles of solute that dissolves in a litre of solution. It is expressed as mol/L or M (molarity).

**Fundamentals**

**Solubility product:** The equilibrium constant which defines the solubility of ionic substance in water is known as solubility product. The solubility product is denoted by.

For a saturated solution, the solubility product is the product of activities of the ions, each raised to its coefficients (powers).

Consider a general reaction:

The molar solubility of M ion = **[M]**

The molar solubility of X ion = **[X]**

The ions raised to the power= **n and m**

**Answer:**

Let concentrations of **A and B be X**

The equation is as follows:

The solubility equation of **AB(S)** is given above. The ionization of **AB(S)** gives .

The coefficient of ion is one and coefficient of ion is one. And the expression for **AB(S)** is written with respect to the equation.