Essential Chemistry for IGCSE - Chemical Reactions (Section 4 - No. 45)
What is the main factor that determines whether a reaction is spontaneous?
The speed of the reaction
The change in enthalpy (ΔH)
The change in Gibbs free energy (ΔG)
The presence of a catalyst
Explanation
A negative change in Gibbs free energy (ΔG) indicates a spontaneous reaction.
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