Thermodynamics Question 82

Question: The heat liberated when 1.89 g of benzoic acid is burnt in a bomb calorimeter at 25oC increases the temperature of 18.94 kg of water by 0.632oC .If the specific heat of water at 25oC is 0.998 cal/g-deg, the value of the heat combustion of benzoic acid is

[CPMT 1999; BHU 2000]

Options:

A) 771.1 kcal

B) 871.2 kcal

C) 881.1 kcal

D) 981.1 kcal

Show Answer

Answer:

Correct Answer: A

Solution:

Q=18.94×0.632×0.998×1221.89 = 771.1Kcal



NCERT Chapter Video Solution

Dual Pane