Greater than

Higher than

Lower than

Lower than

Always negative

Sometimes negative

Sometimes positive

Always positive

Positive or negative depending on the volume of the ice

Nonspontaneous

Spontaneous

Reaction is at equilibrium

We must know the moles of gas to predict spontaneity at this temperature

Negative enthalpy change and positive entropy change

Negative enthalpy change and negative entropy change

Positive enthalpy change and positive entropy change

Positive enthalpy change and negative entropy change

less than zero

greater than zero

equal to zero

only greater than zero at high temperatures

only less than zero at low temperatures

Never

At high temperatures

At low temperatures

In zero gravity

Upon addition of a catalyst