Question

The standard potential of the following cell is 0.23 V at `15^(@)C` and `0.21V` at `35^(@)C`.`Pt|H_(2) |HCl(aq) |Agcl (s)|g(s)`
(i) write the cell reaction .
(ii) Calculate `DeltaH^(@)` and `DeltaS^(@)` for the cell reaction by assuming that these quantities remain unchanged in the range `15^(@)C` to `35^(@)C`.
(iii) calculate the solubility of `AgCl` in water at `25^(@)C`.
Give , the standard reduction potential of the `(Ag^(+)(aq) //Ag(s)` is 0.80 V at `25^(@) C`.

Answer 1

(i) `1/2 H_(2)(g)+AgCI(s) H^(+)(aq)+Ag(s)+CI^(-)(aq)`
(ii) `Delta^(@)=-96.5 JK^(-1) mol^(-1) DeltaH^(@)=-499987 J^(-)mol^(-1)`