A Daniel cell constructed in the laboratory. The voltage observed was `0.9V` instead of `1.10V` of the standard cell. A possible explanation is

Options

A. Molar ratio of `Zn^(+2),Cu^(2+)`is `2:1`
B. The Zn electrode has thrice the surface of Cu electrode
C. `[Zn^(2+)]lt[Cu^(2+)]`
D. `[Zn^(2+)]gt[Cu^(2+)]`

Answer

D

Explanation

`E_(cell)=E_(cell)^(@)-(0.059)/(n)log.([Zn^(2+)])/([Cu^(2+)])`
`E_(cell) " decrease indicates" [Zn^(2+)]gt[Cu^(2+)]`