Question

A)A reaction is observed in which there are more products at the time of observation than when it is at equilibrium. Using mathematical relationships, what can you predict about the spontaneity of the reaction in the foward direction?

B) A reaction is quite spontaneous even at very high temperatures. Discuss the most likely values dor Delta S Delta H and Delta G at 25 C

C) What can you predict about the standard Gibbs free energy change for a product favor reaction.

Answer 1

A) DG should be negative in the forward direction

we know that DG = DH - T*DS

   When     DH = -ve(exothermic) , DS = +ve (entropy increses) then the forward rection is spontaneous.

                DH = +ve(endothermic) , DS = +ve (entropy increses) and T = high then the forward rection is spontaneous.

B)

we know that DG = DH - T*DS

DG = -Ve(spontaneity)

when

DH = -ve(exothermic) , DS = +ve (entropy increses) then the rection is spontaneous.

DH = +ve(endothermic) , DS = +ve (entropy increses) and T = high then the rection is spontaneous.

C) DG = -ve