1.

Delta S_("surr") for an exothermic reaction is

Answer»

always positive
always negative
zero
may be positive or negative

SOLUTION :In EXOTHERMIC processes, heat released by the reaction increases the entropy of the SURROUNDING. The overall entropy change is CERTAINLY positive when the entropy of the system is positive. In some exothermic reactions, entropy of the system may decrease. If reaction is highly exothermic and increase in entropy of the surroundings is very high, the total entropy change will be positive and the reaction will be spontaneous.


Discussion

No Comment Found

Related InterviewSolutions