Chemical Thermodynamics Question 299
Question: One gram sample of $ NH_4NO_3 $ is decomposed in a bomb calorimeter. The temperature of the calorimeter increases by 6.12 K the heat capacity of the system is 1.23 kJ/g/deg. What is the molar heat of decomposition for $ NH_4NO_3 $ [AIIMS 2003]
Options:
A) - 7.53 kJ/mol
B) - 398.1 kJ/mol
C) - 16.1 kJ/mol
D) - 602 kJ/mol
Show Answer
Answer:
Correct Answer: A
Solution:
Molecular weight of $ NH_4NO_3=80 $ Heat evolved $ =1.23\times 6.12 $
$ \therefore $ Molar heat capacity $ =1.23\times 6.12\times C $ .
