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Grade 12th passPhysical Chemistry

What is the sign of change in entropy for exothermic and endothermic reaction........ .

Profile image of  Pawan joshi
7 Years agoGrade 12th pass
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Profile image of Arun
7 Years ago
the change in enthalpy is positive, and heat is absorbed from the surroundings by the reaction. Whether a reaction is endothermic orexothermic depends on the direction that it is going; some reactions are reversible, and when you revert the products back to reactants, the change in enthalpy is opposite.