Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Which among the following is (are) true about slaking of lime?
(i) It is an endothermic reaction
(ii) It is an exothermic reaction
(iii) The pH of the resulting solution will be more than seven
(iv) The pH of the resulting solution will be less than seven
Slaking of lime is an exothermic reaction as heat is liberated or released.
The pH of the resulting will be more than seven as calcium hydroxide is formed which is basic in nature and bases always have pH greater than seven.