A sample of gas is compressed at constant external pressure
CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics
Problem
A sample of gas is compressed at constant external pressure. Which of the following statements about the work associated with this process is most accurate?
(a) The work is negative because the gas loses energy as it is compressed.
(b) The work is positive because energy is transferred to the gas as its volume decreases.
(c) The work is zero because the external pressure is constant, making W=∫PdV=0.},{
(d) The sign of the work depends on how the gas temperature changes during the compression.