Calculate the pH for the cell at 25°C-pt (s)|H2 (g,1bar)|H+(pH=?)||AgCl (s),Ag (s)|Cl-(aq,1M).Given Ecell=0.245v

Q.Calculate the pH for the cell at 25°C-

pt (s)|H2 (g,1bar)|H+(pH=?)||AgCl (s),Ag (s)|Cl-(aq,1M).Given Ecell=0.245v

Answer

Step 1:E°cell CalCulation 

For this cell the cell reaetion is

H2+2AgCl=2H+ +Ag +Cl-

Thus E°cell=E°Agcl,Ag|cl- -E°H+/H2

   =0.22 -0.00

  =0.22v

Step 2:E cell CalCulation 

To calculate Ecell we use nernst equation

Ecell=E°cell-(0.059÷n)log[H+]^2 [Cl-]

=0.22+0.059 pH

Step 3:pH calculation

Given Ecell=0.245v and we calculate

 E cell=0.22+0.059pH

So,0.22+0.059pH=0.245

PH=0.43

Step 1:

Step 2                                                                  

Step 3