Homework Help: chemistry

Posted by erin on Monday, June 18, 2012 at 5:43pm.

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.

chemistry - DrBob222, Monday, June 18, 2012 at 6:16pm
2H^+ + 2e ==> H2
E = Eo - (0.05916/2)log[H2/(H^+)^2]
Plug and chug.
chemistry - erin, Monday, June 18, 2012 at 6:23pm
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??
chemistry - DrBob222, Monday, June 18, 2012 at 6:30pm
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.

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