Question

In which of the following aqueous solutions would you expect AgI to have the highest solubility? In which of the following aqueous solutions would you expect AgI to have the highest solubility? 0.038 M NaI 0.050 M AgNO3 0.025 M KI 0.0125 M LiI AgI will have the same solubility in all solutions.

Answer 1

Answer:

Solubility indicates the maximum amount of a substance that can be dissolved in a solvent at a given temperature. Such a solution is called saturated,it is calculated by dividing the mass of the compound by mass of the solvent then multiply by the molar concentration.

molar mass of solvent (Agl)= 107.8682 + 126.90447 = 234.77267g/mol

For 0.038M of Nal

molar mass of Nal compound= 22.99 + 126.90447 = 149.89447g/mol

solubility = [ 149.89447 / 234.77267] * 0.038 = 0.024

For 0.05M of AgNO3

molar mass of AgNO3 compound = 107.8682 + 14.01 + 3(16) = 169.8782g/mol

solubility = [169.8782 / 234.77267] * 0.05 = 0.036

For 0.025M of KI

molar mass of KI compound = 39.0983 + 253.8089 = 292.9072g/mol

solublity = [292.9072 / 234.77267] * 0.025 = 0.031

For 0.0125M of Lil

molar mass of Lil compound = 6.941 + 253.8089 = 260.7499g/mol

solubility = [260.7499 / 234.77267] * 0.0125 = 0.014

Therefore the solution with the highest solubility is 0.05M of AgNO3