Spontaneous Reaction Video Lessons

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Problem: If ΔG is positive at all temperatures, then the sign of ΔS is ______ and ΔH has a ______ sign.A. positive, negativeB. negative, positiveC. small, zeroD. large, zeroE. large, small

FREE Expert Solution

We’re being asked to determine the signs of ΔH and ΔS if ΔG is positive at all temperatures.


Recall that when ΔH and ΔS are given, we can determine the spontaneity of the reaction based on their signs

We can use the Punnett square shown below:

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Problem Details

If ΔG is positive at all temperatures, then the sign of ΔS is ______ and ΔH has a ______ sign.

A. positive, negative

B. negative, positive

C. small, zero

D. large, zero

E. large, small

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

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