Consider the following electrochemical cell notation: M(s) / M2+(aq)// H+(aq)/ H2(g). The value of the electrode potential is positive when
-
A.
electrons flow from the metal electrode, M(s) to hydrogen electrode, H2(g) -
B.
electrons fow from hydrogen electrode, H2(g) to metal electrode, M(s) -
C.
the flow of current is high -
D.
there is equilibrium between the flow of electrons from the hydrogen electrode, H2(g) to metal electrode, M(s)