Question

Calculate potential of hydrogen electrode in solution with ph 10

Answer 1

Answer:

p H = 10

Using formula [H+] = 10-pH

So [H+]   = 10-10 M

Electrode reaction will be

H+ + e-   → ½ H2

Use the formula

Value of E0 = 0

Ecell = E0    -    0.0591  log[H2]

                         1            [H+]      

Ecell =    -    0.0591  log( 1/10-10)

                      1                

Ecell =     -    0.0591  ( 10)  = -0.591 V

                      1