This is the net ionic equation for the complete neutralization of a generic diprotic acid with sodium hydroxide: H2A (aq) + 2 NaOH (aq) + 2 H20 (1) + Na2A (aq) a. OH- (aq) + H+ (aq) â H20 (1) b. 2 Na+ (aq) + A2- (aq) - Na2Cl (s) c. 2 OH- (aq) + 2 H+ (aq) + 2 H20

c. 2 OH⁻(aq) + 2 H⁺(aq) ⇒ 2 H₂O(l)

Explanation:

Step 1: Write the molecular equation

The molecular equation includes all the molecular species.

H₂A(aq) + 2 NaOH(aq) ⇒ Na₂A(aq) + 2 H₂O(l)

Step 2: Write the complete ionic equation

The complete ionic equation includes all the ions and the molecular species.

2 H⁺(aq) + A²⁻(aq) + 2 Na⁺(aq) + 2 OH⁻(aq) ⇒ 2 Na⁺(aq) + A²⁻(aq) + 2 H₂O(l)

Step 3: Write the net ionic equation

The net ionic equation includes only the ions that participate in the reaction and the molecular species.

2 OH⁻(aq) + 2 H⁺(aq) ⇒ 2 H₂O(l)