Answer:
The false statement is a. ΔErxn is a measure of heat.
Explanation:
ΔErxn represents the energy change in a chemical reaction. However, in real processes the energy change is not only a measure of heat but also other forms like work and potential and kinetic energy.
Enthalpy is actually defined like the sum of a system's internal energy and the product of pressure and volume, so b is correct.
ΔHrxn is also the heat of reaction, which is also true
The last ones are also true
