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

Question

A particular reaction has G = –350kJ and S = –350J/K. Which of the following can be said about this reaction at 25ºC?

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

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

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

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

Explanation / Answer

IF G < 0, this means this is spontanous

if S < 0, this means that the order of the system is increasing

therefore

note that in general, for real lif eprocesses (i.e. not perfect equilbiriums)

you will have

W < Q

since not many heat can be converted to work

we call this "high quality" heat and "low quality" heat

then

choose

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

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