Question

solid calcium hydroxide
dissolved in water to
form calcium hydroxide with the liberation of heat. This calcium hydroxide dissolved in water
form lime water
Which among the following statement is true
A) It is endothermic reaction
B) It is a exothermic reaction
C) pH of the solution will be more than 7
D) pH of the solution will be less than 7​

Answer 1

Answer:

it is exothermic reaction (b)

Explanation:

Because usually we classify the reaction on the basis of heat evolution then we check pH .

Answer 2

Answer:

it is both B) and C)

Explanation:

When solid calcium oxide reacts vigorously with water, it forms calcium hydroxide which is accompanied by generation of heat. This event proves the reaction is exothermic . pH of the solution will be more than 7 because oxides and hydorxides of metals are alkaline.

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