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.
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: