Question

Sodium hydroxide and HCl acid react as shown in this equation

NaOH_(aq)4 + HCl_(aq) → NaCl_(aq) + H₂O 

(i) Which type of chemical reaction is this?

(ii) The reaction is exothermic. Explain what that means?

(iii) Differentiate exothermic and endothermic reaction.

(iv) What happens to the temperature of the solution as the chemicals react?

Answer 1

(i) Neutralization reaction

(ii) When heat is evolved during a chemical reaction it is called exothermic.

(iii) Exothermic : 

1. Heat is evolved. 

2. Temperature increases.

Endothermic : 

1. Heat is absorbed. 

2. Temperature decreases.

(iv) Temperature of the solution increases.