X is a pink solid. Y is a blue solid. When X is heated, water is produced and the solid turns blue. When water is added to Y, the solid turns pink. What are X and Y?
A) anhydrous cobalt (II) chloride, hydrated cobalt(II)chloride
B) hydrated cobalt (II) chloride, anhydrous cobalt (II) chloride
C) anhydrous copper(II) sulfate, hydrated copper (II) sulfate
D) hydrated copper (II) sulfate, anhydrous copper (II) sulfate
