A particular process is found to have a positive standard Gibbs free energy chan

Question

A particular process is found to have a positive standard Gibbs free energy change. Which of the following must be true about this process? Select all that apply. CA At some concentration values, the reaction will be spontaneous B) The reaction will be non-spontaneous at all temperature and concentrations CO At standard conditions, the reaction is spontaneous DO The reaction will be spontaneous at all temperature and concentrations CE At standard conditions, the reaction is non-spontaneous SUBMIT QUESTION

Explanation / Answer

G = Go + R*T*lnk

where K is equilibrium constant

Go = -R*T*ln K

Although Go is positive right now but at some concentration such that K becomes more than 1, Go will become negative and reaction will become spontaneous

So, A is correct

G = Go + R*T*lnk

At some other T, G may become positive. So we can’t say that the reaction will be spontaneous always

So, B is wrong

Obviously E is correct

Answer: A, E

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