A) Under what conditions is the heat absorbed by a system is equal to the work done by the system

thermodynamics
cbse

#1

(a) Under what conditions is the heat absorbed by a system is equal to the work done by the system.
(b) Under what conditions the following reaction will be spontaneous:
(i) Reaction with both $\Delta $H and $\Delta $S positive.
(ii) Reaction with both $\Delta $H and $\Delta $S negative.


#2