Chemistry Past Paper

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Centre No. Candidate No.
Paper Reference(s)

Surname Paper Reference

Initial(s)

7 0 8 1
7081/02

0 2

Signature

Examiner’s use only

London Examinations GCE
Chemistry
Ordinary Level Paper 2
Monday 19 January 2009 – Morning Time: 2 hours

Team Leader’s use only

Question Leave Number Blank

1 2 3 4 5

Materials required for examination Nil

Items included with question papers Nil

6 7 8 9

Instructions to Candidates
In the boxes above, write your centre number, candidate number, your surname, initial(s) and signature. The paper is arranged in TWO sections, A and B. In Section A, answer ALL questions in the spaces provided in this question paper. In Section B, answer TWO questions in the spaces provided in this question paper. Indicate which question you are answering by marking the box ( ). If you change your mind, put a line through the box ( ) and then indicate your new question with a cross ( ).

Information for Candidates
A Periodic Table is printed on the back cover of this question paper. Calculators may be used. The total mark for this paper is 100. Marks for parts of questions are shown in round brackets: e.g. (2). This paper has 9 questions. All blank pages are indicated. DATA One mole of any gas occupies 24 000 cm3 at room temperature and atmospheric pressure. One mole of electrons carries a charge of 96 500 coulombs or 1 faraday.

Advice to Candidates
Write your answers neatly and in good English. In calculations, show all the steps in your working. This publication may be reproduced only in accordance with Edexcel Limited copyright policy. ©2009 Edexcel Limited.

Total

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N29895A
W850/U7081/57570 5/5/4/4/1500

Printer’s Log. No.

*N29895A0120*

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SECTION A Answer ALL questions in this section. There is useful data on the front cover and a Periodic Table is printed on the back of this booklet. 1. (a) For the laboratory preparation of dry hydrogen, state the reactants, drying agent and method of collection. Reactants ....................................................................................................................... Drying agent ................................................................................................................. Method of collection ..................................................................................................... (3) (b) (i) Write an equation for the combustion of hydrogen in oxygen to form water. ................................................................................................................................ (1) (ii) Give a chemical test and the result to show that water is the product. ................................................................................................................................ ................................................................................................................................ (2) (iii) Give a physical test and the result to show that the water is pure. ................................................................................................................................ ................................................................................................................................ (2) (c) Write the equation for the reaction between hydrogen and chlorine and name the gaseous product. Equation ........................................................................................................................ Name of product ........................................................................................................... (2) (Total 10 marks) Q1

2

*N29895A0220*

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2.

You are provided with solutions of hydrochloric acid, sodium hydroxide, barium chloride and limewater only. In addition, you have a Bunsen burner, test tubes and dropping pipettes but no other apparatus. Describe how you would distinguish between each of the following...
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