Which of the following is a statement of Hess's law?
A) The ∆H for a process in the forward direction is equal to the ∆H for the process in the
reverse direction.
B) The ∆H of a reaction depends on the physical states of the reactants and products.
C) If a reaction is carried out in a series of steps, the DH for the reaction will equal the sum
of the enthalpy changes for the individual steps.
D) The ∆H for a process in the forward direction is equal in magnitude and opposite in sign to the ∆H for the process in the reverse direction.