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SPA (MML 10758 3/05) T03720/2
© UCLES 2006
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS
General Certificate of Education Ordinary Level
CHEMISTRY
5070/04
Paper 4 Alternative to Practical
October/November 2006
1 hour
Candidates answer on the Question Paper.
No Additional Materials are required.
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all your work you hand in.
Write in dark blue or black pen.
You may use a pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, highlighters, glue or correction fluid.
Answer all questions.
At the end of the examination, fasten your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
Centre Number
Candidate Number
Name
For Examiner’s Use
1 Name the apparatus shown below.
answer ...............................................................
[1]
2
(a) Ammonia and hydrogen chloride are each passed into different samples of water and a
few drops of litmus solution added to each.
Describe the colour of the litmus
(i)
in the ammonia solution,
.............................................................
(ii)
in the hydrogen chloride solution.
.............................................................
(iii) By what name is aqueous hydrogen chloride more commonly known?
.............................................................
[3]
(b) Two pieces of cotton-wool, soaked separately in concentrated aqueous solutions of
ammonia (Mr = 17) and hydrogen chloride (Mr = 36.5) were placed at opposite ends of
a horizontal tube, as shown in the diagram below.
After a few minutes, a white solid was produced on the side of the tube.
(i) At which position, A, B or C, was the white solid formed? Explain your answer.
position ...............................................
explanation ...............................................................................................................
...........