Question

Calculate the standard potential of the following cell at 25°C:

Zn_(s) | Zn²⁺ (0.08 M) || Cr³⁺ (0.1 M) | Cr_(s)

`E_(Zn)^0` = −0.76 V,  `E_(Cr)^0` = −0.74 V

Answer 1

`E_(cell)^0 = E_(cathode)^0 - E_(anode)^0`

`E_(cell)^0 = E_(Cr)^0 - E_(Zn)^0`

= −0.74 V − (−0.76 V)

= 0.02 V