The salts X(NO3)2 and Y(NO3)2 (where X⁺ and Y⁺ are metal ions) are dissolved in water to give a solution which is 0.1 M in each of them. Using the Ksp values listed below, decide which aqueous reagent, if any, will definitely precipitate X⁺ before precipitating Y⁺ from solution.

Given Ksp values:

XCl2, 1x10⁻⁵ YCl2, 1x10⁻¹⁰ X(OH)2, 1x10⁻¹⁰ Y(OH)2, 1x10⁻⁵

A)1M NH3
B)1M HCl
C)1M HNO3
D) 1M NaCl
E) None of the above reagents will accomplish the precipitation