Thermodynamics Question 82
Question: The heat liberated when 1.89 g of benzoic acid is burnt in a bomb calorimeter at $ 25^{o}C $ increases the temperature of 18.94 kg of water by $ {{0.632}^{o}}C $ .If the specific heat of water at $ 25^{o}C $ 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=\frac{18.94\times 0.632\times 0.998\times 122}{1.89} $ = $ 771.1Kcal $
BETA
