Electrochemistry — Prelims Questions

Which of the following statements is INCORRECT regarding a standard hydrogen electrode (SHE)?

Calculate the cell potential ($E_{cell}$) for the following reaction at 298 K: \n$Zn(s) + Cu^{2+}(0.1\ M) \rightarrow Zn^{2+}(1.0\ M) + Cu(s)$ \nGiven: $E^\circ_{Zn^{2+}/Zn} = -0.76\ V$, $E^\circ_{Cu^{2+}/Cu} = +0.34\ V$.

A current of $0.965\ A$ is passed through $500\ mL$ of $0.2\ M\ CuSO_4$ solution for $1000\ s$. Assuming 100% current efficiency, what will be the concentration of $Cu^{2+}$ ions in the solution after electrolysis? (Atomic mass of Cu = 63.5 g/mol, F = 96500 C/mol)

The molar conductivities at infinite dilution for $NaCl$, $HCl$, and $CH_3COONa$ are $126.4$, $425.9$, and $91.0\ S\ cm^2\ mol^{-1}$ respectively. What is the molar conductivity at infinite dilution for $CH_3COOH$?

For a spontaneous electrochemical reaction, which of the following conditions must be met?

Which of the following factors does NOT affect the conductivity of an electrolytic solution?

How many Faradays of electricity are required to deposit $2.7\ g$ of aluminium from molten $Al_2O_3$? (Atomic mass of Al = $27\ g/mol$)