Question

Calculate the potential of hydrogen electrode in contact with a solution
whose pH is 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