Marks Zinc displaces copper from copper(II) sulphate solution. StGr 2013 The equation for the reaction is: Q14 Circle the spectator ion in the above equation. (a) 1 the ion-electron equation for the oxidation step in this reaction. (b) 1 You may wish to use the data booklet to help you. (c) The reaction can also be carried out in a cell. (i) Complete the three labels on the diagram. 1 (ii) What is the purpose of the ion bridge? 1 Answers Sample Answers and Mark Allocation Notes (a) Can be circled on either side or both sides or identified in some other way 1
Marks StGr 2013 Q14 Zinc displaces copper from copper(II) sulphate solution. The equation for the reaction is: (a) Circle the spectator ion in the above equation. 1 (b) the ion-electron equation for the oxidation step in this reaction. You may wish to use the data booklet to help you. 1 (c) The reaction can also be carried out in a cell. (i) Complete the three labels on the diagram. 1 (ii) What is the purpose of the ion bridge? 1 Answers Sample Answers and Mark Allocation Notes (a) Can be circled on either side or both sides or identified in some other way 1
Chemistry-N5-Past-Paper-Questions-Chemistry-in-Society3.docx