Question

For an isothermal process, which of the following quantities are zero?
(a) ΔU and ΔT (b) Q and W (c) ΔU and W (d) ΔU and Q

Answer 1

Answer:

(a) is correct

Explanation:

An isothermal process is a change of a system, in which the temperature remains constant: ΔT = 0. In other words, in an isothermal process, the value ΔT = 0 and therefore the change in internal energy ΔU = 0 (only for an ideal gas) but Q ≠ 0, while in an adiabatic process, ΔT ≠ 0 but Q = 0.