Chemistry Question?

8) the Ksp for Ca(IO3)2 = 7.1x10^-7 (at 25°C) What is molar solubility of Ca(IO3)2 in a solution containing 0.25 M NaIO3 ?

a. 1.14x10^-5
b. 1.14x10^-7
c. 2.7x10^-3
d. 1.14x10^-4
e. 5.6x10^-3

Pleas give working out!
2 answers 2