Anode, cathode and electrode polarity

Many rechargeable batteries use an alkaline electrolyte. In the nickel-cadmium cell, cadmium, $\ce{Cd}$, is the anode. $\ce{Cd(OH)2(s) + 2e- -> Cd(s) + 2OH-(aq)}$ $\ce{NiO(OH)(s) + H2O(l) + e- -> Ni(OH)2(s) + OH-(aq)}$ Deduce the overall reaction for the cell.

A student proposed that, because tin(IV) iodide might be ionic, electrolysing the molten compound with inert electrodes should regenerate tin and iodine. (i) Label the diagram of the electrolytic cell to show which electrode is the anode and which is the…

Zinc displaces copper from aqueous copper(II) sulfate solution, as shown in the voltaic cell below. Which row correctly gives the sign and the electrode type of the zinc electrode in this cell? In each option the sign is given first and the electrode type…

Molten lead(II) bromide, $\ce{PbBr2(l)}$, is electrolysed using inert electrodes. Which products form at the electrodes? A. Anode: $\ce{Br2}$, cathode: $\ce{Pb}$ B. Anode: $\ce{O2}$, cathode: $\ce{Pb}$ C. Anode: $\ce{Pb}$, cathode: $\ce{Br2}$ D. Anode:…

(i) Deduce the condensed electron configuration of chlorine. (ii) Describe the bonding in a molecule of chlorine in terms of valence electrons. (iii) Explain why chlorine has a much lower boiling point than bromine, although both exist as simple diatomic…

Magnesium is a stronger reducing agent than lead. A voltaic cell is constructed using magnesium and lead electrodes dipped into solutions of their respective ions, $\ce{Mg^2+ (aq)}$ and $\ce{Pb^2+ (aq)}$, of equal concentrations. What is correct when the…