Question

Solid calcium oxide reacts vigorously with water to form calciumhydroxide accompanied by liberation of heat. This process iscalled slaking of lime. Calcium hydroxide dissolves in water toform 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 ​

Answer 1

Solid calcium oxide reacts vigorously with water to form calciumhydroxide accompanied by liberation of heat. This process iscalled slaking of lime. Calcium hydroxide dissolves in water toform 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 

Answer 2

Answer:

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. ... As heat is liberating during the reaction so, slaking of lime is an exothermic reaction.