Heat of combustion of two isomer x and y are 17 kJ/mol and 12 kJ/mol respectively. From this information it may be concluded that :

Heats of atomisation of chlorine and hydrogen are 243 kJ mol^(-1) and 435 kJ mol^(-1) respectively. Heat of formation of HCl is -92 kJ mol^(-1) . Calculate the bond energy of HCL.

The heat of combustion of carbon and monoxide are -394 and -285 KJ mol^(-1) respectively. The heat of formation of CO in KJ mol^(-1) is :-

The heat of combustion of carbon and monoxide are -394 and -285 KJ mol^(-1) respectively. The heat of formation of CO in KJ mol^(-1) is :-

The enthalpies of combustion of carbon and carbon monoxide are -390 kJ mol^(-1) and -278 kJ mol^(-1) respectively. The enthalpy of formation of carbon monoxide is

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 combustion of C_(2) H_(5) (g) and ethanol are -393.5, -286 and -1368 kJ respectively. The heat of formation of ethanol is : -277 kJ mol ^(-1) , + 277 kJ mol ^(-1) , - 554 kJ mol ^(-1) , + 554 kJ mol ^(-1)