In Which One of the Following Processes Is ΔH =

Multiple Choice

In which one of the following processes is ΔH = ΔE?

A) 2HI(g) → H ₂(g) + I ₂(g) at atmospheric pressure.
B) Two moles of ammonia gas are cooled from 325 °C to 300 °C at 1.2 atm.
C) H ₂O(l) → H ₂O(g) at 100 °C at atmospheric pressure.
D) CaCO ₃(s) → CaO(s) + CO ₂(g) at 800 °C at atmospheric pressure.
E) CO ₂(s) → CO ₂(g) at atmospheric pressure.