CHEMISTRY · Single correct · A Level · Chemistry · Thermodynamics · Thermodynamics
Problem
According to the second law of thermodynamics, how does the total entropy change ΔStotal of an isolated system behave during a spontaneous process?
(a) It remains exactly zero for every spontaneous process.
(b) It increases or, in the limiting case of a reversible process, remains constant.
(c) It decreases because energy becomes more ordered.
(d) It can take any positive or negative value depending on the direction of energy transfer.