For the following example, what is true about Δ_rH and Δ_rS? 2N₂O(g) → 2N₂(g) + O₂(g)

Question

Quizplus · Accepted Answer

In the reaction, two gases (O2 and N2) are converted into three gases (O2, N2, and SO2). Since the number of gaseous molecules increases, the entropy of the system increases as well, which means Δ_rS is positive. On the other hand, the reaction is exothermic, which means it releases heat to the surroundings. The decrease in thermal energy in the system also implies a decrease in entropy, which makes Δ_rH negative. Therefore, the correct choice is (C).

For the Following Example, What Is True About ΔrH and ΔrS

For the Following Example, What Is True About Δ_rH and Δ_rS