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Paper 3 Practical Test
CONFIDENTIAL INSTRUCTIONS
5070/03
May/June 2004
Great care should be taken that any confidential information given does not reach the candidates either directly or indirectly.
INSTRUCTIONS TO SUPERVISORS
Teachers responsible for the examination are NOT allowed to consult the question paper before the day of the examination. However, they are asked to carry out a titration between solutions P and Q, to ensure that the concentrations of the two solutions fall within the given range.
On the day of the examination, the Supervisor is asked to perform the experiments in Questions 1 and 2 and to record the results on a spare copy of the question paper clearly labelled “Supervisor’s Results”, followed by the number of the Centre. This must be enclosed with the scripts. Unless this is done candidates may be unavoidably penalised.
It is essential that candidates accept the descriptions of the solutions as they appear in the question paper.
If candidates from more than one Centre are taking the examination, it is essential that a copy of the
Supervisor’s Results should be sent with the scripts for each Centre.
If you have any problems or queries regarding these Instructions, please contact CIE by e-mail:
International@ucles.org.uk,
by phone:
+44 1223 553554, by fax:
+44 1223 553558, stating the nature of the query and the syllabus number quoted above.
This document consists of 5 printed pages and 3 blank pages.
SP (NF) S62899/1
© UCLES 2004
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CHEMISTRY
s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS
General Certificate of Education Ordinary Level
2
INSTRUCTIONS TO SUPERVISORS
For Question 1
Candidates will require the following.
(a) Approximately 2.0 mol/dm3 hydrochloric acid (HCl), labelled P.
Allow each candidate approximately 200 cm3.
(b) Approximately 2.0 mol/dm3 sodium hydroxide (80 g/dm3 NaOH), labelled Q.
Allow each