Which of the following is not a correct acid-base neutralization reaction?

HI + KOH - -> KI + H20

Ca (OH) 2 + HCl - -> CaCl + H2O

CH3COOH _ NH4OH - -> NH4CH3COO + H2O

HBr _ CsOH - -> CsBr + H2O

Ca (OH) 2 + HCl → CaCl + H2O is not a correct acid - base neutralization reaction

Explanation

Acid and base react to form salt and water.

The reaction of Ca (OH) 2 + HCl → CaCl2 + H2O is not correct because

The formula of salt formed is incorrect. It is suppose to be CaCl2 since Ca has a charge of 2 + while cl - has a charge of - 1. Therefore to form ionic bond 2 Cl ion are needed. The equation is not balanced. there is suppose to be 2 in front of HCl and in front of H2O

Therefore the correct acid - base neutralization reaction is as below

Ca (OH) 2 + 2HCl→ CaCl2 + 2H2O