Q14(a). Zn | ZnCl₂ | AgCl | Ag: reactions, transference, E° and K
For the galvanic cell Zn(s) | ZnCl₂(aq) | AgCl(s) | Ag(s): (i) write down the electrode reactions and cell reaction; (ii) is it a cell with transference? Give reason; (iii) find E° of the cell and the equilibrium constant K° of the cell reaction at 25 °C. Given E°(Zn²⁺/Zn) = −0.76 V and E°(AgCl/Ag, Cl⁻) = +0.22 V at 25 °C.
Model answer
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Coversgalvanic cellcell without transferenceequilibrium constantΔG° = −nFE°
All parts of Question 14
- 14(a) Zn | ZnCl₂ | AgCl | Ag: reactions, transference, E° and K10 marks
- 14(b) Ksp of AgI from a concentration cell10 marks