Homework Solution: The potential produced by the hydrogen electrode is dependent on the concentration of H^+…

    5. Question 21.6 (10 marks) The potential produced by the hydrogen electrode is dependent on the concentration of H(aq) and the partial pressure of H2(g) (a) Given that the half-cell reaction is H(aq)+e Eo(H+/H2) = 0.00 V, Write down the Nernst equation for the half-cell potential (b) Assuming that the partial pressure of H2 is 1 bar (i.e. the standard pressure) show that the half-cell potential is given by E (RT/F) InlH] (c) Show that the half-cell potential is related to the pH in the following way [hint In x = In10 x log x] E--In 10 x (RT/F) x phH (d) Does it become easier or more difficult for a reducing agent to reduce H to H2 as the pH increases?
    The potential produced by the hydrogen electrode is dependent on the concentration of H^+(aq) and the partial pressure of H_2(g) (a) Given that the half-cell reaction is H^+(aq) + e^- 1/2 H_2 (g) E^0 (H^+/H_2) = 0.00 V, Write down the Nernst equation for the half-cell potential. (b) Assuming that the partial pressure of H_2 is 1 bar (i.e. the standard pressure) show that the half-cell potential is given by E = (RT/F) ln[H^+] (c) Show that the half-cell potential is related to the pH in the following way [hint ln x = In10 times log x] E = -ln 10 times (RT/F) times pH (d) Does it become easier or more difficult for a reducing agent to reduce H^+ to H_2 as the pH increases?

    Expert Answer

    Answer

    5. Question 21.6 (10 marks) The germinative executed by the hydrogen electrode is resting on the eagerness of H(aq) and the peculiar exigency of H2(g) (a) Abandoned that the half-cell reaction is H(aq)+e Eo(H+/H2) = 0.00 V, Write down the Nernst equation control the half-cell germinative (b) Assuming that the peculiar exigency of H2 is 1 obstruct (i.e. the type exigency) illusion that the half-cell germinative is abandoned by E (RT/F) InlH] (c) Illusion that the half-cell germinative is connected to the pH in the controlthcoming controlm [insinuate In x = In10 x log x] E--In 10 x (RT/F) x phH (d) Does it behove easier or past perplexing control a reducing principal to convert H to H2 as the pH increases?

    The germinative executed by the hydrogen electrode is resting on the eagerness of H^+(aq) and the peculiar exigency of H_2(g) (a) Abandoned that the half-cell reaction is H^+(aq) + e^- 1/2 H_2 (g) E^0 (H^+/H_2) = 0.00 V, Write down the Nernst equation control the half-cell germinative. (b) Assuming that the peculiar exigency of H_2 is 1 obstruct (i.e. the type exigency) illusion that the half-cell germinative is abandoned by E = (RT/F) ln[H^+] (c) Illusion that the half-cell germinative is connected to the pH in the controlthcoming controlm [insinuate ln x = In10 times log x] E = -ln 10 times (RT/F) times pH (d) Does it behove easier or past perplexing control a reducing principal to convert H^+ to H_2 as the pH increases?

    Expert Repartee

    Answer