The enthalpies of formation of CO_{2(g)} and N_2O_(g) are - 110 , - 393 and 81 kJ mol^{-1} respectively. If the enthalpy of reaction (\Delta_r H) for N_2O_4_(g) + 3CO_(g) → N_2O_(g) + 3CO_{2(g)} is -778 kJ. the enthalpy of formation of N_2O_{4(g)} is KJ mol^{-1} is

AP EAMCET Medical 2018 Shift 1 Paper

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The enthalpies of formation of CO2(g) and N2O(g) are - 110 , - 393 and 81 kJ mol−1 respectively. If the enthalpy of reaction (Δr H) for N2O4(g) + 3CO(g) → N2O(g) + 3CO2(g) is -778 kJ. the enthalpy of formation of N2O4(g) is KJ mol−1 is

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