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[" The enthalpies of formation of "CO_(2(g)),H_(2)O_((1))],[" and "C_(2)H_(4(g))" are respectively "-393.5,-286" and "],[+52.3kJmor^(-1)" the enthalpy change for the "],[" combustion of "C_(2)H_(4(g))" is "],[[" 1"-1306kJmol^(-1)," 2) "-1411.3kJmol^(-1)],[" 3) "-509.7kJmol^(-1)," 4) "-731.5kJmol^(-1)]]

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The enthalpies of formation of CO_(2(g)), H_(2)O_((l)) and C_(2)H_(4(g)) are respectively -393.5, -286 and +52.3 kJ mol^(-1) the enthalpy change for the combustion of C_(2)H_(4(g)) is

The enthalpies of formation of CO2(g),H2O(l) and C2H4(g) ​ are respectively −393.5,−286 and +52.3kJmol −1 . The enthalpy change for the combustion of C2H4(g) ​ is ?

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

If enthalpies of formation of C_(2)H_(4)(g)1 and H_(2)O(l) at 25(@)C and 1 atm pressure be 52,-394 and -286kJmol^(-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 :-

The standard enthalpies of formation of H_(2)O(l) and CO_(2)(g) are respectively -286" kJ mol"^(-1) and -394" kJ mol"^(-1) . If the standard heat of combustion of CH_(4)(g)" is "-891" kJ mol"^(-1) , then the standard enthalpy of formation of CH_(4)(g) is