Question

Testbank, Question 011 x your answer is incorrect. Try again. For an addition reaction, why does free energy, AG, become more positive with increasing temperature? The enthalpy and entropy cancel at high temperature. The negative enthalpy dominates at high temperature. • The positive entropy dominates at high temperature. The negative entropy dominates at high temperature. The positive enthalpy dominates at high temperature.

Answer 1

For an addition reaction the change in entropy is always negative becaise in this reaction two or more molecules or atoms come together to form a heavier compound.

Now,

DeltaG = DeltaH - TxDeltaS

So, the negative entropy dominates at high temperatures and makes deltaG positive.

Comment if any problem