question_answer 4)

Calculate the potential of hydrogen electrode contact with a solution whose pH is 10.  

Answer:

pH = 10 means [H+] = 10?10 M                 Now for the electrode reaction;                 H+ (aq) + e?  1/2 H2(g) (Here n = 1)                                 0 = ? 0.059 log                   = ? 0 .059 x 10 log 1010                    = ? 0.059 × 10 log 10 = ? 0.59 V.