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NEET-XI-Chemistry

06: Chemical Thermodynamics

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  • #11
    Enthalpy of combustion of carbon to CO2 is -393.5 kJ mol-1. Calculate the heat released upon formation of 35.2 g of CO2 from carbon and dioxygen gas.
    Ans : Formation of CO2 from carbon and dioxygen gas can be represented as:



    (1 mole = 44 g)

    Heat released on formation of 44 g CO2 = -393.5 kJ mol-1

    Heat released on formation of 35.2 g CO2



    = -314.8 kJ mol-1