Zinc displaces copper from the solution of its salt because

Identify which of the following cell reactions is spontaneous under standard state conditions.

In an electrolytic cell,the flow of electrons is from:

Which among the following equations represents the reduction taking place in a lead accumulator at the positive electrode,while it is being used as a source of electrical energy?

At $25^{\circ} C$,the molar conductance at infinite dilution for the strong electrolytes $NaOH$,$NaCl$ and $BaCl_{2}$ are $248 \times 10^{-4}$,$126 \times 10^{-4}$ and $280 \times 10^{-4} \ S \ m^{2} \ mol^{-1}$ respectively. $\lambda_{m}^{o} Ba(OH)_{2}$ in $S \ m^{2} \ mol^{-1}$ is

Consider a cell given below $Cu \,|\, Cu^{2+} \,|\, | \, Cl^{-} \,|\, Cl_2$,$Pt$. Write the reactions that occur at anode and cathode.