Cell EMF under Nonstandard Conditions (Section)The cell in Figure could be used to provide...

Cell EMF under Nonstandard Conditions (Section)

The cell in Figure could be used to provide a measure of the pH in the cathode half-cell. Calculate the pH of the cathode half-cell solution if the cell emf at 298 K is measured to be +0.684 V when [Zn2+] = 0.30 M and PH2 = 0.90 atm.

Why do Na+ ions migrate into the cathode half-cell as the cell reaction proceeds?

Figure A voltaic cell using a standard hydrogen electrode (SHE). The anode half-cell is Zn metal in a Zn(NO3)2(aq) solution, and the cathode half-cell is the SHE in a HNO3(aq) solution.