Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

Which expression correctly represents the First Law of Thermodynamics?
Options
A ΔU = ΔH - PΔV
B Q = W + PΔV
C ΔU = Q - W
Correct Answer
D Q = ΔH - ΔU
Correct Answer

Option C is the correct answer.

Detailed Explanation

The First Law of Thermodynamics is a statement of energy conservation. It states that the change in internal energy (ΔU) of a system is equal to the heat added to the system (Q) minus the work done by the system (W).

Hint

This is the fundamental equation linking internal energy change to heat and work.

Question Info