yolo123
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Hello Forum :),
Please find attached my problem. The solutions is also there. BUT, I do not understand why my teacher does not simply assume pH=0. It seems as though we are using the standard hydrogen electrode (ie 1M H+ in solution!).
Please find attached my problem. The solutions is also there. BUT, I do not understand why my teacher does not simply assume pH=0. It seems as though we are using the standard hydrogen electrode (ie 1M H+ in solution!).
Attachments
![Handwritten worked solution to a Nernst equation problem: Zn(s) + 2H+(aq) → Zn2+ + H2, Zn2+ + 2e⁻ ⇌ Zn E° = -0.76 V, n = 2, E = E° - 0.0592/n log Q, leading to 0.54 = 0.76 - 0.0592/2 log(1/[H+]²), -0.22 = -0.0296 log(1/[H+]²), 7.43 = log(1/[H+]²), [H+] = 1.92 x 10⁴, pH = 3.7.](/data/attachments/53/53557-f8ae019223cba7eaaa065e4fed3c7488.jpg?hash=-K4BkiPLp-){kind=small}