Question

What is the net ionic equation for the reaction that is represented by the following total ionic equation?

Answer 1

Answer:

B. >>> Image 3  

Step-by-step explanation:

Ionic equation :

6Na⁺(aq) + 2PO₄³⁻(aq) + 3Ca²⁺(aq) + 6Cl⁻(aq) ⟶ 6Na⁺(aq) + 6Cl⁻(aq) + Ca₃(PO₄)₂(s)

=====

Net ionic equation:

Cancel all ions that appear on both sides of the reaction arrow (underlined).

6Na⁺(aq) + 2PO₄³⁻(aq) + 3Ca²⁺(aq) + 6Cl⁻(aq) ⟶ 6Na⁺(aq) + 6Cl⁻(aq) + Ca₃(PO₄)₂(s)

3Ca²⁺(aq) + 2PO₄³⁻(aq )⟶ Ca₃(PO₄)₂(s)

A. >>> Image 2 is wrong, because it is the molecular equation

C. >>> Image 4 is wrong, because it is not balanced.

D. >>> Image 5 is wrong, because the phosphate ion behaves as a unit. It does not break up into phosphorus and oxide ions.