Consider the following reaction,which is spontaneous at room temperature.
C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(g)
One would predict that

Question

Consider the following reaction,which is spontaneous at room temperature. C₃H₈(g)+ 5O₂(g)→ 3CO₂(g)+ 4H₂O(g) One would predict that

Quizplus · Accepted Answer

The fact that the reaction is spontaneous at room temperature indicates that ΔG is negative. The equation ΔG = ΔH - TΔS relates ΔG to ΔH and ΔS, where T is temperature in Kelvin. Since ΔG is negative, either ΔH is negative and/or ΔS is positive. Option E is the only choice that describes both ΔH and ΔS as negative, which would lead to a negative ΔG at higher temperatures. This is because the positive TΔS term can overcome the negative ΔH term and result in a negative ΔG.

Consider the Following Reaction,which Is Spontaneous at Room Temperature