Question

Ca₃(PO₄)₂ is insoluble in water. On adding a few drops of HCl to solid Ca₃(PO₄)₂ in contact with water, the solid dissolves. What is the reason?

a. The solvent becomes more polar on adding HCl 

b. Ca²⁺ ions combine with Cl ions

c. Ca(H₂PO₄)₂ is formed, which dissolves

d. H₃PO₄ a weak acid is formed and the ionic product of calcium phosphate drops

Answer 1

Correct option is d. H₃PO₄ a weak acid is formed and the ionic product of calcium phosphate drops