Question

calculate the reduction potential for hydrogen ion in a system having a perchloric acid concentration of 2.00 x 10^-4 M and a hydrogen pressure of 2.50 atm.

Answer 1

2H^+ + 2e ==> H2
E = Eo - (0.05916/2)log[H2/(H^+)^2]
Plug and chug.

Answer 2

I am given the concentration of HClO4 and a pressure for H2... how do i plug either of the givens into the equation youve shown??

Answer 3

Pressure of H2 goes in in atmospheres in the numerator. (HClO4) = (H^+) and goes in in molar units in the denominator and is squared since I used 2e in the 0.05916/2 part.