The enthalpy of combustion of methane, graphite & dihydrogen at 298 K are, `-890.3 kJ mol^-1, 393.5 kJ mol^-1 & 285.8 kJ mol^-1`' respectively. Enthalpy of formation of `CH_4(g)` will be :

The enthalpy of combustion of methane, graphite and dihydrogen at 298K are -890.3 kJ*mol^(-1) , -393.5 kJ*mol^(-1) and -285.8kJ*mol^(-1) respectively. Enthalpy of formation of CH_(4)(g) will be-

At 25^(@)C temperature, the heat of combustion of sucrose, carbon and hydrogen are -5644 kJ*mol^(-1),-393.5kJ*mol^(_1) & -285.8kJ*mol^(-1) respectively. Determine the heat of formation of sucrose at 25^(@)C .

Calculate the standard enthalpy of formation of n- butane. Given : standard enthalpy of combustion of n- butane, C (graphite) and H_(2)(g) " are " -2878.5 " kJ mol"^(-1), -393.5 " kJ mol"^(-1) and -285.8 " kJ mol"^(-1) respectively.

The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 kJ mol^-1 respectively. The enthalpy of formation of carbon monoxide per mole is

Calculate the value of enthalpy of combustion of cyclopropane at 25^(@)C and 1 atm pressure. Given: Standard enthalpy of formation of CO_(2)(g),H_(2)O(l) & propene (g) at 25^(@)C are -393.5kJ*mol^(_1),-285.8kJ*mol^(-1)& 20.4kJ*mol^(-1) respectively. also standard enthalpy change for isomerisation reaction: Cyclopropane (g) hArr Propene (g) is -33.0kJ*mol^(-1) .

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) .

The heats of combustion of carbon and carbon monoxide are -393.5 and -283.5 kJ*mol^(-1) respectively. The heat of formation (in kJ) of carbon monoxide per mole is-

The standard enthalpies of formation of CO_2(g), H_2O(l) and glucose (s) at 25^@C are -400 kJ/mol, -300 kJ/mol and -1300 kJ/mol, respectively. The standard enthalpy of combustion per gram of glucose at 25^@C Is

The melting point and boiling point of sulphur dioxide are -75^(@)C and -10^(@)C respectively. If the change in enthalpy of fusion and vaporisation of sulphur dioxide are 7.4 " kJ mol"^(-1) and 25.2 " kJ mol"^(-1) respectively, calculate the change in entropy of fusion and vaporisation of SO_(2) ?