For the cell `Tl|Tl^(+)(0.001M)||Cu^(2+)(0.01M)|Cu.E_("cell")` at `25^(@)C` is 0.83V, which can be increased:

Options

A. by increasing `[Cu^(2+)]`
B. by increasing `[Tl^(+)]`
C. by decreasing `[Cu^(2+)]`
D. none

Answer

A

Explanation

`E_("cell") = E_("cell")^(@) + (0.0592)/(2) log _(10) ([Cu^(2+)])/([Tl^(2+)])`
`therefore E_(cell) prop [Cu^(2+)]`