On Earth, most metals can corrode due to the presence of oxygen in acidic conditions. Assuming the following are the most common reactions for Av and Bn: Av3+ (aq) + 3e Av(s) E = -0.43 V Bn4+ (aq) + 4e Bn(s) E = +0.11 V Which metal is more susceptible to corrosion by oxygen? Explain. [2A] Upon corrosion, a layer forms along the surface of a sample of Alphavium. What would this layer be made of? [1A] The layer on top of Alphavium sheds off, similar to how rust sheds off iron. What will happen to the mass of pure Alphavium over time? [1A] (d) Three new elements have just been discovered. These elements are Gammium (Gm), Kappium (ka) and Zetanium (Ze). Preliminary experiments have yielded the following results: Bn (s) + Ze(NO3)3 (aq) no reaction Ze (s) + AV(NO3)2 (aq) no reaction Gm (s) + Av(NO3)3 (aq) no reaction Ka (s) + Gm(NO3)2 (aq) no reaction Bn (s) + Gm(NO3)2 (aq) Gm (s) + Bn(NO3)4 (aq) (i) Arrange the elements Av, Bn, Gm. Ka and Ze in order from strongest reducing agent to weakest reducing agent. [3A] (ii) Will a reaction occur between Gm and Bn(NO3),? Explain. [2A] (iii) Write the reduction half reaction for the reaction that does occur. [1A] (iv)The standard cell potential for the galvanic cell formed between Gammium and Betanium was found to be 0.74V. Determine E for the following reaction. [2T] Gm (s) + 2e- Gm2+ (aq) E =