Explain the mistake in the student’s statement. (1) 3.4 Oxidising or Reducing Agents 1. The iodate ion, IO3–, can be converted to iodine. Which is the correct ion-electron equation for the reaction? A 2IO3–(aq) + 12H+ + 12e– 2I–(aq) + 6H2O(l)  aq) B IO3–(aq) + 6H+ + 7e– I–(aq) + 3H2O(l)  aq) C 2IO3–(aq) + 12H+ + 11e– I2(aq) + 6H2O(l)  aq) D 2IO3–(aq) + 12H+ + 10e– I2(aq) + 6H2O(l)  aq) 2. Which of the following is a redox reaction? A Mg + 2HCl MgCl2 + H2  B MgO + 2HCl MgCl2 + H2O  C MgCO3 + 2HCl MgCl2 + H2O + CO2  D Mg(OH)2 + 2HCl MgCl2 + 2H2O  3. The ion-electron equations for a reaction are: How many moles of iodide ions are oxidized by one mole of permanganate ions? A 0.2 B 0.4 C 2 D 5 4. In of the following reactions is the hydrogen ion acting as an oxidising agent? 5. During a redox process in acid solution, iodate ions IO3 are converted into (aq) iodine I2(aq). IO3 I2(aq) → (aq) The numbers of H+(aq) and H2O(l) required to balance the ion-electron equation for the formation of 1 mol of I2(aq) are, respectively
Explain the mistake in the student’s statement. (1) 3.4 Oxidising or Reducing Agents 1. The iodate ion, IO3–, can be converted to iodine. Which is the correct ion-electron equation for the reaction? A 2IO3–(aq) + 12H+ aq) + 12e–  2I–(aq) + 6H2O(l) B IO3–(aq) + 6H+ aq) + 7e–  I–(aq) + 3H2O(l) C 2IO3–(aq) + 12H+ aq) + 11e–  I2(aq) + 6H2O(l) D 2IO3–(aq) + 12H+ aq) + 10e–  I2(aq) + 6H2O(l) 2. Which of the following is a redox reaction? A Mg + 2HCl  MgCl2 + H2 B MgO + 2HCl  MgCl2 + H2O C MgCO3 + 2HCl  MgCl2 + H2O + CO2 D Mg(OH)2 + 2HCl  MgCl2 + 2H2O 3. The ion-electron equations for a reaction are: How many moles of iodide ions are oxidized by one mole of permanganate ions? A 0.2 B 0.4 C 2 D 5 4. In of the following reactions is the hydrogen ion acting as an oxidising agent? 5. During a redox process in acid solution, iodate ions IO3 (aq) are converted into iodine I2(aq). IO3 (aq) → I2(aq) The numbers of H+(aq) and H2O(l) required to balance the ion-electron equation for the formation of 1 mol of I2(aq) are, respectively