The enthalpies of formation of all the elements in their standard states are

The enthalpies of formation of the elements in their standard states are

Statement-1: Combustion of all organic compounds is an exothermic reaction . Statement-2: The enthalpy of formation of all elements in their standard state are zero.

The enthalpy of formation for all elements in their standard state is

The enthalpies of all elements in their standard states are

Enthalpies of all elements in standard states are-

The enthalpies of all elements in their standard states are :

The enthalpies of all elements in their standard states are :