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The molar heat of vaporisation for water...

The molar heat of vaporisation for water is `9.72 kcal mol^(-1)`. The amount of heat change when 45 g of water condense is :

A

437.4 kcal

B

24.3 kcal

C

243 kcal

D

3.89 kcal

Text Solution

Verified by Experts

The correct Answer is:
B
Heat of condensation of 18 g of water = 9.72 kcal
Heat of condensation of 45 g of water `= (9.72 xx 45)/(18) = 24.3 kcal`
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