The entropy of the surrounding when an exothermic reaction takes place increases.
A reaction is defined as exothermic if the overall standard enthalpy change (H) is negative. Exothermic processes typically releases heat.
Example of Exothermic reaction:
CaO+H2O Ca(OH)3 + Heat
Entropy is a measurable physical characteristic and a scientific notion that is frequently connected to a condition of disorder, unpredictability, or uncertainty.
Now you know as in exothermic reaction heat is given to the surrounding hence more heat is added to the surrounding which results in the rising of entropy of the surrounding.
Hence, the entropy of the surrounding when an exothermic reaction takes place increases.
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