Question

If the value for ΔS is postive, and the value for ΔH is negative, thr reaction will be
Group of answer choices

A. spontaneous at high temperatures.

B. spontaneous at all temperatures.

C. spontaneous at low temperatures.

D. Δnot spontaneous at all temperatures.

Answer 1

It follows that the reaction is spontaneous at high temperatures Option A.

What is ΔS ?

The term ΔS is referred to as the change in the entropy of the system. Now recall that entropy is defined as the degree of disorderliness in a system. If a system is highly disorderly then it means that it has a high entropy. Also, ΔH has to do with the heat change that accompanies a reaction.

We know that both the entropy and the heat change can both either be positive or negative. Now we know that the equation ΔG = ΔH - TΔS can be used to ascertain whether or not a reaction will be spontaneous. If the result is negative, then the reaction will be spontaneous.

As such, when then it follows that the reaction is spontaneous at high temperatures Option A.

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