Question

MEDAL AND FAN
If a reaction is not spontaneous at any temperature, what is true of the reaction?

It has a positive enthalpy and positive entropy change.
It has a positive enthalpy and negative entropy change.
It has a negative enthalpy and positive entropy change.
It has a negative enthalpy and negative entropy change.

Answer 1

It has a positive enthalpy and negative entropy change
it has no way of ever getting a dG = negative

since
dG = dH - TdS