The heat liberated when 1.89 g of benzoi...

The heat liberated when `1.89 g` of benzoic acid is burnt in a bomb calorimeter at `25^(@)C` increases the temperture of `18.94 kg` of water by `0.632 ^(@)C`. If the specific heat of water at `25^(@)C` is `0.998 cal//g "deg"`, the value of the heat of combustion of benzoic acid is

771.1 kcal

871.2 kcal

881.1 kcal

981.1 kcal

Text Solution

Verified by Experts

The correct Answer is:

`Q=(18.94xx0.632xx0.998xx122)/(1.89)=771.1 kcal`.

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