Hi, I'm having trouble ranking these in the order of relative strength as reducing agents, where the most powerful reducing agent would be given rank "1", and the least "6".
So, I looked up the table of Eo (V)
H- (3)
Br- (6)
OH- (basic half-cell solution) (4)
Ag+ (5)
Fe (2)
Ca (1)
Is this correct?