Which of the following is an acid-base neutralization reaction

Sn+2HF->SnF2+H2

C2H4+3O2->2CO2+H2O

MgCl2+Ca (OH) 2->Mg (OH) 2+CaCl2

HNO3+KOH->KNO3+H2O

The right choice is "HNO₃ + KOH → KNO₃ + H₂O "

Explanation:

acid-base neutralization reaction is a reaction in which acid react with base to form salt and water.

Sn + 2HF → SnF₂ + H₂

This is a reaction between metal (Sn) and acid (HF)

2. C₂H₄ + 3 O₂ → 2 CO₂ + H₂O

This is a combustion reaction

3. MgCl₂ + Ca (OH) ₂ → Mg (OH) ₂ + CaCl₂

This is a simple displacement reaction between salt (MgCl₂) and base (Ca (OH) ₂).

3. HNO₃ + KOH → KNO₃ + H₂O

This is a acid-base neutralization reaction in which acid (HNO₃) react with base (KOH) to form salt (KNO₃) and water (H₂O).

So, the right choice is "HNO₃ + KOH → KNO₃ + H₂O"