Question

21
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?
(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 FT
11 Di​

Answer 1

Answer. B - Slaking of lime is an exothermic reaction because a large amount heat is produced during the reaction. The heat can be felt by touching the beaker from outside. The resulting compound Ca(OH)2, which is also called slaked lime, turns red litmus solution to blue and hence proves it to be a basic solution.

Explanation:

I hope this is help for you. .

Answer 2

Explanation:

I) no it is not a endothermic reaction because heat is released from the product which is the firm of exothermic reaction.

ii) yes it is a type of exothermic reaction here as for the information I have tell from first answer.

iii) the the resultant compound which is Ca(OH)2 which is a slaked lime which will Turner litmus paper red from blue which means it is a basic oxide. hence its pH will be less than 7 not more than 7