Answer:
The correct option is d.
d) If ΔH and ΔS have the same sign, the temperature will determine the spontaneity
Explanation:
Consider the table attached at the bottom which shows Spontaneity and the sign of Enthalpy and Entropy terms.
We can clearly see from the table how temperature effects the Spontaneity.
If the signs of ΔH and ΔS are opposite, the spontaneity doesn't depend on the temperature.
If the signs of ΔH and ΔS are same, then the temperature effects the Spontaneity. If both have negative signs, reaction is spontaneous at low temperature. If both have positive signs, reaction is spontaneous at high temperature.
