Predict if a Reaction is Spontaneous with Thermodynamic Signs

Given Enthalpy and Entropy signs and using Gibbs Free Energy Equation, predict if the reaction will be spontaneous/thermodynamically favorable (-G) or non-spontaneous/thermodynamically unfavorable (+G).
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Dear Professor, If the Delta G > 0 , it is non spontaneous. Does it also mean "Spontaneous process in opposite direction"? Thank you so much.

[@OldSchoolChemistry]

Hi Nguyen, yes, that is correct. If you reverse a non spontaneous reaction it will become spontaneous. The conservation of energy is the justification. Thank you for your question! I hope your class goes well!😊

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