Question

The enthalpy change that accompanies a reaction in which 1 mole of its standard state is formed from its elements in their standard states

Options

• bond enthalpy of reaction

• Standard enthalpy of formation 

• Standard enthalpy of reaction 

• Standard enthalpy of combustion

Answer 1

Standard enthalpy of formation

Explanation:

The standard enthalpy of formation of a compound is the enthalpy change that accompanies a reaction in which one mole of the pure compound in its standard state is formed from its elements in their standard states.