Why is a fall in enthalpy not a complete test of spontaneity?
AEntropy does not matter much
BSome endothermic reactions still occur
CAll reactions are exothermic
DEnthalpy is not a state function
Answer & Solution
Correct answer: B. Some endothermic reactions still occur
Reactions such as graphite with sulphur giving CS2 absorb heat yet proceed on their own.
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