AP EAMCET2007ChemistryElectrochemistry
Calculate the emf of the cell Cu (s) | Cu ²⁺(a q) | | Ag ⁺(a q) | Ag (s) Given E_ Cu ²⁺ / Cu ^0=+0.34 ~V , E_ Ag ⁺ / Ag ^0=0.80 ~V
Options
- A+0.46 ~V
- B+1.14 ~V
- C+0.57 ~V
- D-0.46 ~V
Correct answer
A. +0.46 ~V
Step-by-step solution
aligned E_ cell ^ & =E_ red (cathode) ^ -E_ oxi (anode) ^ & =E_ Ag ⁺ / Ag ^ -E_ Cu ⁺ / Cu ²⁺ ^0 & =0.80-(+0.34)=+0.46 ~V aligned