1.

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

Answer»

771.1 KCAL
871.2 kcal
881.1 kcal
981.1 kcal

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


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