Question

How would you determine if a reaction is entropy driven or enthalpy driven?

Answer 1

Hello !

Reactions can be 'driven by enthalpy' (where a very exothermic reaction (negative ΔH) overcomes a decrease in entropy) or 'driven by entropy' where an endothermic reaction occurs because of a highly positive ΔS. Example 1: The formation of NaCl(s) from its elements is spontaneous and releases a great deal of heat.

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