The solubility product constant for MX2 is 7.2 x 10-8. How many grams of MX2 (108.75 g/mol) will dissolve in 276 ml of water at 25°C. M is the metal and X is the anion. Enter as a number to 4 decimal places.

The mass of that will dissolve is 0.0786 grams

Explanation:

Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio.

The chemical equation for the ionization of follows:

                        s               2s

The expression of for above equation follows:

We are given:

Putting values in above expression, we get:

To calculate the mass of solute, we use the equation used to calculate the molarity of solution:

Molar mass of = 108.75 g/mol

Molarity of solution =

Volume of solution = 276 mL

Putting values in above equation, we get:

Hence, the mass of that will dissolve is 0.0786 grams