Question

Consider the galvanic cell constructed from the following metals and their corresponding metal ions:
E degrees (V)
M^3+^ + 3e^-^ ----> M 0.29
N^2+^ + 2e^-^ ----> N 0.61

Answer 1

I'm confused.
1. Apparently you want the cell construction so as to generate a voltage.
2. However, you don't say what you want.
3. I assume you want to know the voltage generated.

M ==> M^3+ + 3e........Eo = -0.29 v
N^2+ + 2e ==> N.......Eo = 0.61 v
--------------------------------------------
2M + 3N^2+ + 6e==>2M^3+ + 3N + 6e
Eo cell = -0.29 + 0.61 = ?
(NOTE) Remember you do not multiply the voltages when you balance the equation.