Question

Solid calcium Oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form its solution called lime water. Which among the following is are true about slaking of lime and the solution formed?

(a) It is an endothermic reaction.

(b) It is exothermic reaction.

(c) The pH of the resulting solution will be more than seven.

(d) The pH of the resulting solution will be less than seven.

A) (A) & (B)

B) (B) & (C)

C) (A) & (D)

D) (C) & (D)

Answer 1

Answer:

B

Explanation:

Exothermic reaction: Heat is liberated during these reactions. It is given that solid calcium oxide reacts vigorously with water to form calcium hydroxide and heat is liberated with this. This process is called slaking of lime. ... As heat is liberating during the reaction so, slaking of lime is an exothermic reaction.