Electron transfer reactions

The second step converts nitrogen monoxide to nitrogen dioxide. $\ce{2NO(g) + O2(g) <=> 2NO2(g)}$ $\Delta H^\ominus = -114\ \mathrm{kJ\,mol^{-1}}$ (i) Identify the oxidation state of nitrogen in $\ce{NO}$ and in $\ce{NO2}$. (ii) State the equilibrium constant…

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.

Energy can also be produced by a hydrogen-oxygen fuel cell with an acidic electrolyte. (i) Deduce the half-equations for the electrode reactions in this fuel cell. (ii) Hydrogen produces a line emission spectrum with several lines in the visible region.…

(a) Outline two features of this experiment that ensure that the propanal intermediate is not a major product.

Pentan-2-ol will react with acidified potassium dichromate, $\ce{K2Cr2O7}$, which is an oxidizing agent. State the name of the product of this reaction.

What can be produced when pentanoic acid is reduced? A. Pentan-1-one B. Pentan-2-one C. Pentan-1-ol D. Pentan-2-ol

Which statement about this reaction is correct? $\ce{2Cl2 + O2 -> 2Cl2O}$ A. Chlorine is the reducing agent. B. Oxygen is the reducing agent. C. Chlorine is reduced. D. Oxygen is oxidized.

Which of these reactions will occur spontaneously? I. $\ce{KI + Br2}$ II. $\ce{KBr + Cl2}$ III. $\ce{KCl + Br2}$ A. I and II only B. I and III only C. II and III only D. I, II and III

Which combination is correct for this cell, when nickel is more reactive than silver? A. Cathode: silver; anode: nickel; sign on cathode: -; sign on anode: + B. Cathode: nickel; anode: silver; sign on cathode: -; sign on anode: + C. Cathode: nickel; anode:…

What are the products of the electrolysis of molten lead(II) bromide? A. Product at cathode: lead; product at anode: bromine B. Product at cathode: lead; product at anode: bromide C. Product at cathode: bromine; product at anode: lead D. Product at cathode:…