Chemistry: EQUILIBRIUM (HL) Topical Past Paper Questions

Batteries are a portable source of energy. (a) Outline how a rechargeable battery differs from a primary cell. (b) Calculate the potential, in V, of a voltaic cell constructed of a zinc half-cell with $ [Zn^{2+}(aq)] = 1.0 \, \text{mol dm}^{-3} $ and a hydrogen half-cell with pH…

Methanoic acid can be produced by the hydrogenation of carbon dioxide according to the equilibrium $$ \mathrm{CO}_{2}(\mathfrak{g})+\mathrm{H}_{2}(\mathfrak{g})\rightleftharpoons\mathrm{HCOOH}(\mathfrak{g}) $$ (a) Explain why this process has been extensively investigated in rece…

Which of these changes would shift the equilibrium to the right? $ [Co(H_{2}O)_{6}]^{2+}(aq) + 4Cl^{-}(aq) \rightleftharpoons [CoCl_{4}]^{2-}(aq) + 6H_{2}O(l) $ I. Addition of 0.01 M HCl II. Addition of concentrated HCl III. Evaporation of water A. I and II only B. I and III only…