AL CHEM REVIEW

[Inorganic Chemistry] AL CHEM Written Practical [Inorganic Chemistry] ~ Preparation of Gases ~ dry Cl2 drying agent used ?? How to collect?? (upward/downward delivery?) dry HCl dry NH3 dry SO2 p.1

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1994 P.II Q.4 (a) Describe how a sample of dry chlorine is prepared in the laboratory. State the safety precaution(s) that is / are required. (5M) p.7

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1996 P.II Q.5 (c) (i), (ii) (i) Write a balanced equation for the reaction of concentrated sulphuric (VI) acid on potassium chloride. (ii) Briefly describe how a sample of dry hydrogen chloride can be prepared in the laboratory, using the above reaction. Draw a labelled diagram of the laboratory set-up and state the safety precaution(s) that is / are required. (7M) p.9

1996 P.II Q.5 p.10

1997 P.I Q.7 (a) Briefly describe how a sample of dry chlorine gas can be prepared in the laboratory. Draw a labelled diagram of the laboratory set-up and state the safety precaution(s) that is / are required. (6M) p.11

1997 P.I Q.7 p.12

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2001 P.I Q.7 (a) Suggest how you would prepare a sample of dry hydrogen chloride gas in a school laboratory. Draw a labelled diagram of the set-up of apparatus used in the preparation. (4M) p.14

2001 P.I Q.7 p.15

2002 P.I Q.7 (b) Devise an experiment, using chemicals and apparatus commonly available in a school laboratory, to show that the reaction of peroxodisulphate (VI) ions with iodide ions can be catalyzed by iron (III) ions. S2O82-(aq) + 2I-(aq)  2SO42-(aq) + I2(aq) (5M) p.16

2002 P.I Q.7 p.17