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E and Spontaneity

Posted: Wed Feb 27, 2019 3:43 pm
by Kristen Kim 2K
Is the cell reaction spontaneous if E is positive and nonspontaneous if E is negative?

Re: E and Spontaneity

Posted: Wed Feb 27, 2019 3:45 pm
by Felicia1E
The cell reaction is spontaneous when E is positive, because in the equation deltaG = -nFE, if E is positive, G is negative, which is a spontaneous process.

Re: E and Spontaneity

Posted: Wed Feb 27, 2019 4:37 pm
by Philipp_V_Dis1K
a positive E means that the reaction will create energy, "exothermic" in a sense, with no need to put in heat to start the reaction. This is the opposite for negative E values, which are "endothermic" and require energy for the reaction to proceed