Question

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​

Answer 1

Answer:

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.

1. 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​"