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[" 72.If enthalpies of formation for "C_(2)H_(4(y))" .CO "_(2(y))],[" and "H_(2)O_(11)" at "25^(@)C" and "1" atm pressure are "],[52,-394" and "-286" kJ/mol respectively,"],[" then enthalpy of combustion of "C_(2)H_(4(y))" will be "],[[" (a) "+141.2kJ/mol," (b) "+1412" kJ/mol "],[" (c) "-141.2kJ/mol," (d) "-1412kJ/mol]],[[" (c) "-141.2kJ/mol," (d) "-1412kJ/mol]]

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The enthalpy of formation for C_(2)H_(4)(g) , CO_(2)(g) and H_(2)O(l) at 25^(@)C and 1 atm. Pressure be 52 , -394 and -286 kJ mol^(-1) respectively. The enthalpy of combustion of C_(2)H_(4)(g) will be

The enthalpy of formation for C_(2)H_(4)(g),CO_(2)(g) and H_(2)O(l) at 25^(@)C and 1 atm. Pressure are 52, -394 and -286 KJ mol^(-1) respectively. The entahlpy of combustion of C_(2)H_(4) will be :-

If the enthalpies of formation of C_3H_8(g), CO_2(g) and H_2O(l) at standard conditions are -104 kJ mol^-1, -394 kJ mol^-1 and -286 kJ mol^-1 respectively then the standard Enthalpy of combustion of 66 g of C_3H_8(g) will be

At 25^(@)C and 1 atm, heat of formation of C_(2)H_(4) (g), CO_(2)(g) and H_(2)O(l) are 52 " kJ mol"^(-1), -394 " kJ mol"^(-1) and -286 " kJ mol"^(-1) respectively. Calculate the heat of combustion of C_(2)H_(4)(g) .