Problem: A particular chemical reaction has a negative ΔH and a negative ΔS. Which statement is correct?(A) The reaction is spontaneous at all temperatures.(B) The reaction is non spontaneous at all temperatures.(C) The reaction becomes spontaneous as temperature increases.(D) The reaction becomes spontaneous as temperature decreases.

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FREE Expert Solution

We’re being asked to determine which of the given statements is correct for a reaction given the sign of its ΔH and  ΔS.


The statements given describe the spontaneity of the reaction at different 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

A particular chemical reaction has a negative ΔH and a negative ΔS. Which statement is correct?

(A) The reaction is spontaneous at all temperatures.

(B) The reaction is non spontaneous at all temperatures.

(C) The reaction becomes spontaneous as temperature increases.

(D) The reaction becomes spontaneous as temperature decreases.

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