Which reaction has been chosen as the 'standard' against which every other reaction is measured?

A. F2 + 2e ---> 2F–
B. O2 + 4H+ + 4e ---->2H2O
C. 2H+ + 2e---> H2
D. Li+ + e ---> Li
E. H2 + 2e --->2H

i got C is that right?

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  1. I guess C is correct, since there is no "none of these" as a choice. Technically, the H^+ is at 1 M activity and H2 gas is at 101.325 kPa (1 atmosphere) and convention is to show that when writing the cell notation. Technically, again, the problem asks which REACTION has been chosen and that doesn't require stating molarity and pressure. So C is correct.

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  2. its wrong!

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