A particular reaction has G = –350kJ and S = –350J/K. Which of the following can

ID: 938749 • Letter: A

Question

A particular reaction has G = –350kJ and S = –350J/K.

Which of the following can be said about this reaction at 25ºC?

a.heat produced is less than the work produced because some of the heat cannot be converted to work

b.heat produced is less than the work produced, because some of the work cannot be converted to heat

c.work produced is less than the heat produced, because some of the heat cannot be converted to work

d. work produced is less than the heat produced, because some of the work cannot be converted to heat

G = H - TS

G = H - 298*S

-350000 = H - 298*(-350)

H = -350000 -298*350 = -454300 J = -454.3 kJ

NOTE:

you can't produce more work than heat

then

c.work produced is less than the heat produced, because some of the heat cannot be converted to work

must be true

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