Question

Does $\mathrm{Ecell}$ depends on concentrations?

Answer 1

The $\mathrm{Ecell}$ which is also known as the cell potential is dependent on concentration according to the Nernst equation.

Nernst equation:

$$\begin{gathered} \mathrm{E}={\mathrm{E}}^0-\frac{\mathrm{RT}}{\mathrm{zF}}\mathrm{lnQ} \\ \mathrm{E}=\mathrm{reduction}\mathrm{potential} \\ {\mathrm{E}}^0=\mathrm{standard}\mathrm{potential} \\ \mathrm{R}=\mathrm{universal}\mathrm{gas}\mathrm{constant} \\ \mathrm{T}=\mathrm{temperature}\mathrm{in}\mathrm{kelvin} \\ \mathrm{z}=\mathrm{ion}\mathrm{charge}(\mathrm{moles}\mathrm{of}\mathrm{electron}) \\ \mathrm{F}=\mathrm{Faraday}\mathrm{constant} \\ \mathrm{Q}=\mathrm{reaction}\mathrm{quotient} \end{gathered}$$