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06/10/2020 11:30 am
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One gram sample of NH4NO3 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 NH4NO3?
(a) -7.53 kJ/mol
(b) -398.1 kJ/mol
(c) -16.1 kJ/mol
(d) -602 kJ/mol
1 Answer
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06/10/2020 11:32 am
(d) -602 kJ/mol
Explanation:
Heat produced (Q) = mCΔT
= 1× 1.23 × 6.12 kJ.
Molecule weight of NH4NO3 = 80 g
Heat produced per mole = 80 × 1.23 × 6.12
= 602 kJ/mol