Answer: [tex]HCl+KOH\rightarrow KCl+H_2O[/tex]
Explanation:
Neutralization reaction is defined as the chemical reaction in which an acid reacts with a base to produce a salt and water molecule.
[tex]HX+BOH\rightarrow BX+H_2O[/tex]
a) [tex]HCl+KOH\rightarrow KCl+H_2O[/tex] is a neutralization reaction as acid reacts with a base to produce a salt and water molecule.
b) [tex]AgNO_3+KCl\rightarrow AgCl+KNO_3[/tex] is a double displacement reaction as here exchange of ions take place.
c) [tex]CH_4+2O_2\rightarrow CO_2+2H_2O[/tex] is a combustion reaction in which fuel is reacted with oxygen to form carbon dioxide and water.
d) [tex]2K+2H_2O\rightarrow 2KOH+H_2[/tex] is a single replacement reaction in which more reactive element displaces the less reactive element from its salt solution.