Displacement Reactions David Martin City and Islington College Students Name: …………………………………………………………………..

Topic Chemistry – Displacement Reactions Aims  This worksheet provides a simple practical exercise to introduce redox equilibria Level Level 3 Method PowerPoint slides (hand-out) – ALL Slides to be printed out (apart from Slide 2). Answers slide 6 & 7. Equipment  Laptop & Projector  Hand-out  Pens Duration >10-20 Minutes

Displacement Reactions The purpose of this set of reactions is to illustrate the possibility of electron transfer between metals and solutions of metal ions. The process of electron loss is called ______________________________________ The process of electron gain is called ______________________________________ Chemicals and equipment Copper turnings Zinc pieces and Iron Nails Copper (II) Sulphate solution Zinc Sulphate solution Iron (III) Sulphate solution A spotting tile

Displacement Reactions Procedure 1)Get the spotting tile and place the metals in a row – same layout as below 2)Place 2-3 drops of solution into the metals as indicated by the solution name at the top of the table 3)Record any observations in the spaces in the table Copper (II) Sulphate Solution Zinc Sulphate Solution Iron (III) Sulphate Solution Copper x Zinc x Iron x Place the metals in order of reactivity ____________________________________________________________________ ____________________________________________________________________

ANSWERS

Displacement Reactions The purpose of this set of reactions is to illustrate the possibility of electron transfer between metals and solutions of metal ions. The process of electron loss is called Oxidation The process of electron gain is called Reduction Chemicals and equipment Copper turnings Zinc pieces and Iron Nails Copper (II) Sulphate solution Zinc Sulphate solution Iron (III) Sulphate solution A spotting tile

Displacement Reactions Procedure 1)Get the spotting tile and place the metals in a row – same layout as below 2)Place 2-3 drops of solution into the metals as indicated by the solution name at the top of the table 3)Record any observations in the spaces in the table Copper (II) Sulphate Solution Zinc Sulphate Solution Iron (III) Sulphate Solution Copper x No reaction/change Zinc Brown deposit/fizzing x No reaction/change Iron Brown deposit/fizzing Fizzing x Place the metals in order of reactivity Zinc, Iron, Copper

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