ThermochemistryHard

Question

One gram sample of NH4NO3 is decomposed in a bomb calorimer, the temperature of the calorimeter increase 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 ?

Options

A.-7.53 kJ/mol
B.-398.1kJ/mol
C.-16.1kJ/mol
D.-602kJ/mol

Solution

Heat produced (Q) = mC ᐃT
= 1 × 1.23 6.12kJ
Molecule weight of NH4NHO3 = 80gm
Heat produced per mole = 80 × 1.23 × 6.12 = 602kJ/mole

Create a free account to view solution

View Solution Free
Topic: Thermochemistry·Practice all Thermochemistry questions

More Thermochemistry Questions

The ᐃHof for CO2(g), CO(g) and H2O(g) are - 393.5 - 110.5 and 241.8 kJ mol -1 respectively. The standard enthaly c...The reaction CH4(g) + Cl2(g) → CH3Cl(g) + HCl (g) has ᐃH = - 25 kcalFrom the given, data, what is the bond e...A + BA gives iodoform test. ′B′ is heated with excess of H-I. then ′C′ is obtained A and C are :...For the equilibrium H2O(l) ⇋ H2O(g) at 1atm and 298 K :...The enthalpy change (ᐃH) the reaction, N2(g) + 3H3(g) &nbsp → 2NH3(g) is - 92.38 kJ at 398 K. The internal e...