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Chemical Thermodynamics Quiz 3

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10 Question

Popular Questions In Chemical Thermodynamics Quiz 3

  • For the reaction N2(g)N_{2(g)} + 3H2(g)3H_{2(g)} = 2NH3(g)2NH_{3(g)} ; Which of the following is valid ?

  • The heat of combustion of carbon is 394 kJ mol1mol^{-1} . The heat evolved in combustion of 6.023×10226.023 \times 10 ^{22} atoms of carbon is

  • Which of the reactions defines the heat of formation ?

  • ΔU\Delta U^\circ of combustion of methane is -X kJ mol1mol^{-1} . The value of ΔH\Delta H^\circ is

  • The enthalpy of combustion of 5(rhomic)is -297.4 kJ mol1.\text {mol}^{-1}. The amount of sulphur required to produce 29.74 kJ of heat is

  • The heat of formation of SO2(g)SO_{2(g)} and SO3(g)SO_{3(g)} are -269 kJ mol1mol^{-1} and -395 kJ mol1mol^{-1} respectively the value of ΔH for the reaction SO2(g)+12O2(g)SO3(g)SO_{2(g)} + \frac{1}{2}O_{2(g)} \rightarrow SO_{3(g)} is

  • The enthalpy of combustion of methane, graphite and dihydrogen at 298 K are, -890.3 kJ mol1mol^{-1} , -393.5 kJ mol1mol^{-1} and -285.8 kJ mol1mol^{-1} respectively. Enthalpy of formation of CH4(g)CH_{4(g)} will be

  • The enthalpies of formation of N2O(g)N_2 O_{(g)} and NO(g)NO_{(g)} are 82 kJ mol1mol^{-1} and 90 kJ mol1mol^{-1} respectively. Then enthalpy of a reaction 2N2O(g)+O(g)4NO(g)2N_2 O_{(g)} + O_{(g)} \rightarrow 4NO_{(g)} is ………

  • The heat of combustion of naphthalene (C10H8)(C_{10} H_8 ) to CO2CO_2 gas and water vapour at 298 K and at constant pressure is 5.1567×106J.-5.1567\times 10 ^6 J. The heat of combustion at constant volume at 298 K is (R=8.314JK1mol1)(R = 8.314 \, JK ^{-1}\,mol ^{-1}) :

  • Given the reaction,

    2NH3(g)N2(g)+3H2(g)H=92.6kJ2 NH _ 3 (g) \rightarrow N_{2 (g)} + 3 H _{2 (g)} \triangle H = 92.6 kJ

    The enthalpy of formation of NH3NH_3 is :