human
Which two factors enable a reaction to occur spontaneously?
gpt
The energy factor (exothermic or endothermic) and the disorder factor (entropy).
Explanation: Spontaneity in chemical reactions is determined by the combined effects of energy changes and entropy. A reaction can occur spontaneously if it has a negative change in Gibbs free energy, which is influenced by the relationship between energy (ΔH) and entropy (ΔS).