Question

Calculate the ph of the cathode compartment solution if the cell emf at 298 k is measured to be 0.690 v when [zn2+]= 0.20 m and ph2= 0.95 atm .

Answer 1

Calculate the pH of the cathode compartment solution in a voltaic cell if the cell emf at 298 K is measured to be 0.630 V when..[Zn^2+] = 0.25 M and Pressure(H2) = 0.87 atm. 

Anode compartment Zn(s) -> Zn^2+ (aq) + 2e- 
Cathode compartment 2H+ (aq) + 2e- -> H2 (g)