Electrochemistry pH in solution cell

[yolo123]

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!).

 

[Borek]

Question never says "standard" hydrogen electrode. It also never says 1M H⁺, it says 1 atm - which is most likely meant to be 1 atm of H₂.

 

[yolo123]

Got it!