Question

In electrolyte concentration cell:

• A. the electrode material and the solution in both half-cells are composed of the same substances
• B. only the concentrations of solutions of the same substances is different
• C. $E_{cell}^{\circ }=0$
• D. the Nernst equation reduces to $E_{cell}=-\left(\frac{0.0591}{n}\right)\log Q$ at ${25}^{\circ }C$

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A the electrode material and the solution in both half-cells are composed of the same substances
B only the concentrations of solutions of the same substances is different
C the Nernst equation reduces to $E_{cell}=-\left(\frac{0.0591}{n}\right)\log Q$ at ${25}^{\circ }C$
D $E_{cell}^{\circ }=0$

For a ${conc}^n$ cell

$E_{cell}^o=0K_{eq}=1$

Cell rep. for example

$Pt\left(s\right)|H_2\left(g\right)|HCl\left(aq\right)|H_2\left(g\right)|Pt\left(s\right)P_{1}C{P}_2$

$E_{cell}=0-\frac{0.0591}{n}logQ$ at $25℃$