For which of the following reactions will the entropy of the system decrease? A) 2 NH₃(g)$\to$N₂(g)+ 3 H₂(g) B) 2 C(s)+ O₂(g)$\to$ 2 CO(g) C) CaCO₃(s)$\to$ CaO(s)+ CO₂(g) D) 2 NO₂(g)$\to$N₂O₄(g) E) NaOH(s)$\to$ Na⁺(aq)+ OH^-(aq)

Question

Quizplus · Accepted Answer

In reaction D, two moles of gas (NO2) are converted into one mole of gas (N2O4), resulting in a decrease in the number of gas molecules and thus a decrease in entropy.

For Which of the Following Reactions Will the Entropy of the System