AL CHEM REVIEW

AL CHEM Written Practical

[Inorganic Chemistry][Inorganic Chemistry]

p.1

~ Preparation of Gases ~

dry Cl2

drying

agent used

??

How to collect??

(upward/downward delivery?)

dry HCl

dry NH3

dry SO2

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p.6

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

p.8

1996 P.II Q.5 (c) (i), (ii)

(i) Write a balanced equation for the reaction of concentrated sulphuric (VI) acid on potassium chloride.

(7M)

(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.

p.9

1996 P.II Q.5

p.10

1997 P.I Q.7

(6M)

(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.

p.11

1997 P.I Q.7

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2001 P.I Q.7

(4M)

(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.

p.14

2001 P.I Q.7

p.15

2002 P.I Q.7

(5M)

(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.S2O8

2-(aq) + 2I-(aq) 2SO42-(aq) + I2(aq)

p.16

2002 P.I Q.7

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