What is the standard cell potential of a cell made of theoretical metals ma/ma2 + and mb/mb2 + if the reduction potentials are - 0.19 v and - 0.85 v, respectively?

The standard cell potential of a cell made of theoretical metals ma/ma2 + and mb/mb2 + is to be determined. We are given their reduction potentials:

-0.19 v for A

-0.85 v for B

To solve for the standard cell potential, examine the reaction and

the standard cell potential for this case is (-0.19 - (-0.85)) v = - 0.66 v