Question

In a process, a system does 238 J of work on its surrounding by absorbing 54 J of heat. What is the change in internal energy of the system during the operation?

Options

• + 54 J

• + 222 J

• – 184 J

• 192 J

Answer 1

– 184 J

Explanation:

ΔU = q + w

Given, q = 54 J and w = – 238 J ....(work performed by a system or work performed on the environment)

∴ ΔU = 54 – 238 = – 184 J

As a result, the system loses internal energy.