Question: A reaction proceeds spontaneously in a certain direction if: 1. The change in entropy of a positive system 2. The change in the entropy of

A reaction proceeds spontaneously in a certain direction if:

1. The change in entropy of a positive system

2. The change in the entropy of the universe is positive

3. The enthalpy change of the system is negative

4. The change in Gibbs free energy is negative

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