IDNLearn.com is your reliable source for expert answers and community insights. Join our community to receive prompt and reliable responses to your questions from knowledgeable professionals.

Which of the following result(s) in a decrease in the entropy of the system?

I. NH₃(1 atm, 298 K) → NH₃(3 atm, 298 K)
II. Br₂(g) → Br₂(l)
III. NaBr(s) → Na₊(aq) + Br₋(aq)
IV. O2(g, 298 K) → O₂(g, 373 K)