The enthalpy changes for the three elementary steps of a reaction are ,

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

The enthalpy changes for the three elementary steps of a reaction are

+15\,\text{kJ}

-10\,\text{kJ}

, and

-35\,\text{kJ}

, respectively. Calculate the overall

\Delta H

for the reaction in

\text{kJ}