`Delta H^(o)` of `H_2O, CO_2` and sucrose `(C_12H_22O_11)` are respectively (in kJ `mol^-1`)-286, -393.5 and -2222. Enthalpy of combustion of sucrose is

The oxidation number of C in sucrose (C_(12)H_(22)O_(11)) is

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 CO and CO_(2) are -110.5 KJ mol^(-1) and -393.5 KJ mol^(-1) respectively. The enthalpy of combustion of carbon monoxide is

The total number of atoms present in 0.2 mole of sucrose (C_12H_22O_11) is

Compare quantity of heat produced by the combustion of 1.0 g glucose (C_6H_12O_6) with that produced by 1.0g sucrose (C_12H_22O_11) . Given that the standard heats of formation of CO_(2), H_(2)O glucose and sucrose are -393.5, -285.9, -1260 and -2221 kJ mol^(-1) respectively.

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