Arrange the following reactions in order of increasing $\Delta$ _rS° value.
1.H₂(g) + F₂(g) $\to$ 2HF(g)
2) NH₄NO₃(s) $\to$ N₂O(g) + 2H₂O(l)
3) (NH₄) ₂Cr₂O₇(s) $\to$ Cr₂O₃(s) + 4H₂O(l) + N₂(g)

Question

Arrange the following reactions in order of increasing

\Delta

_rS° value.
1.H₂(g) + F₂(g)

\to

2HF(g)
2) NH₄NO₃(s)

\to

N₂O(g) + 2H₂O(l)
3) (NH₄) ₂Cr₂O₇(s)

\to

Cr₂O₃(s) + 4H₂O(l) + N₂(g)

Quizplus · Accepted Answer

The correct order is 1 < 3 < 2. This is because the F1F1F1S1F1F1F10_rS° value is a measure of the spontaneity of a reaction. The more positive the F1F1F1S1F1F1F10_rS° value, the more spontaneous the reaction. In this case, reaction 1 has the smallest F1F1F1S1F1F1F10_rS° value, followed by reaction 3 and then reaction 2.

Arrange the Following Reactions in Order of Increasing Δ\DeltaΔ rS° Value →\to→

Arrange the Following Reactions in Order of Increasing $\Delta$ _rS° Value $\to$