Question

Given that at 25°C
E°
Cr3+/C12+ = -0.424V ; E°Cx2+/C7
= -0.900V
.
Then E° is equal to
Cr3+ /CT
(1) -0.74 V
(2) +0.74 V
(3) -1.324 V
(4) -0.476 V
please solve step by step ​

Answer 1

Answer:

answer is 4....I think so because its cathode minus anode