Question

calculate the solubility of a2x3 in pure water assuming that neither kind of iron react with water solubility product of a2 x3 is 1.1 into 10 to the power minus 23​

Answer 1

A2X3 → 2A+ +3X2-

Ksp = [A+3][ X2-]3 = 1.1 x 10-23

If the solubility of salt is y, then [A+3] = 2y and [ X2-] = 3y

(2y)2 (3y)3 = 108 y5 = 1.1x10-23

Y = 1 x 10-5 mol/L