InterviewSolution
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InterviewSolution
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If enthalpies of formation of CO2(g) and H2O(l) at 25°C and 1 atm pressure, respectively are –x kJ/mol and –y kJ/mol then enthalpy of formation (in kJ/mol) of C2H4(g) will be [Given : Enthalpy of combustion of C2H4(g) is –z kJ/mol]z – 2x – 2yz + 2x – 2yz – 2x + 2yz + 3x – y |
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Answer» If enthalpies of formation of CO2(g) and H2O(l) at 25°C and 1 atm pressure, respectively are –x kJ/mol and –y kJ/mol then enthalpy of formation (in kJ/mol) of C2H4(g) will be [Given : Enthalpy of combustion of C2H4(g) is –z kJ/mol] z – 2x – 2y z + 2x – 2y z – 2x + 2y z + 3x – y |
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