Answer:
Delta H is positive and Delta S is negative
Explanation:
The expression for the standard change in free energy is:
[tex]\Delta G=\Delta H-T\times \Delta S[/tex]
Where,
[tex]\Delta G[/tex] is the change in the Gibbs free energy.
T is the absolute temperature. (T in kelvins)
[tex]\Delta H[/tex] is the enthalpy change of the reaction.
[tex]\Delta S[/tex] is the change in entropy.
For a reaction to be non spontaneous, it means that:- [tex]\Delta G>0[/tex]
Thus,
[tex]\Delta H-T\times \Delta S>0[/tex]
For the above conditions to satisfy, [tex]\Delta H[/tex] must be positive and [tex]\Delta S[/tex] must be negative.
