Question

Deduced from the following Eº values of half cells,
what combination of two half cells would result in
a cell with the largest potential?
(i) A3 → A2- + e, E° = 1.5 V - A
(ii) B2+ + e- → B, E° = 2.1 V -
ii) C2+ + e +C+, E° = +0.5 V -
V) D D2+ + 2e-, E° = -1.5 V - A​

Answer 1

Answer: and D2+ + 2e- and B2+ + e- → B

E° = +3.6v

Explanation:

E° = E°Reducing - E°oxidation

=+2.1v--1.5v

=+3.6v

Answer 2

Answer:

combination of I and ii will result inn greatest cell potential..as 2.1-(-1.5)=3.6