Identify the neutralization reaction.

2NH3 + H2SO4 ⟶ (NH4) 2SO4

2H3PO4 + 3Ba (OH) 2 ⟶ 6H2O + Ba (PO4) 2

2 NO2 ⟶ 2 O2 + N2 PO4

3Pb + 2H3PO4 ⟶ 3H2 + Pb3 (PO4) 2

The neutralization reaction is

2H3PO4 + 3 Ba (OH) 2 = 6 H2O + Ba (PO4) 2

This is because a neutralization reaction involve a reaction between an acid and a base to form a salt and water. for the reaction above H3PO4 is the acid while Ba (OH) 2 is a base which react to form Ba (PO4) 2 a salt and water.