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Chemistry GCE Ordinary Level Paper 2 June 2019 Past Questions

Chemistry GCE Ordinary Level Paper 2 June 2019 Past Questions

Chemistry GCE Ordinary Level Paper 2 June 2019 Past Questions, O-Level Chemistry paper 2 June 2019 past questions free. Cameroon GCE Chemistry papaer 2 June 2019 revision questions.

With the past question papers here for Chemistry GCE Ordinary Level, get to know about the GCE Chemistry O-Level setting, get yourself familiarised with past questions, and solve them to see how prepared you are for the upcoming exams.

This paper is arranged in three, A, B, and C.

In calculations, you are advised to show all the steps in your working, giving your answer at each stage.
Calculators are allowed
You
 are reminded of the necessity for good English and orderly presentation in your answers.

Relative Atomic Masses
Hydrogen (H) = 1.0
Carbon (C) = 12.0
Oxygen (O) = 16.0
Copper (Cu) = 64.0
1 Faraday = 96000 coulombs.
Molar volume of a gas at r.t.p. = 24000cm3
Specific heat Capacity of water = 4.2J/g/°C
Avogadro Number = 6.02x 1023
0°C = 273K

Chemistry GCE Ordinary Level Paper 2 June 2019 Past Questions

Time allowed: Two and a half hours

SECTION A: Answer ALL questions in this section

  1. This question concerns the first four elements in group I of the periodic Table
ElementLithiumSodiumPotassiumRubidium
Symbol(Li)(Na)(k)(Rb)
Atomic Number3111937

(a) (i) Why are they classified as Group I elements? (1 mark)

    (ii) Which of the element is the least reactive? (1 mark)

(iii) Write the electronic configuration of Potassium (K) (1 mark)

    (ii) Write an equation for the reaction between sodium and water. 

(3 marks)

(c) Lithium though in Group I of the P.T resembles Mg in Group II in its chemical properties,
    (i) What name is given to this resemblance?

  (ii) Stae the products formed when the carbonates of Li and Na are strongly heated:

Li2CO3

Na2CO3

(3 marks)

(d) State the type of compound formed when Group I elements combine with non-metals 

(3 marks)

2. Aluminium is prepared industrially from purified bauxite by electrolytic reduction,
(a) (i) Write the formula of the oxide

     (ii) Write the cathode half-reaction for the process

(2 marks)

(b) (i) Can chemical reduction be used to extract Al from its ore?

     (ii) Explain

(2 marks)

(c) (i) Why are Al extraction plants usually located near power stations? (1 mark)

(d) Give one large scale use of Al and relate this use to its property.
Use: __________

Property: ___________

(2 marks)

(e) (i) State one metal that can be extracted by chemical reduction.
     (ii) Name an ore from which this metal is extracted
    (iii) Write an equation for the extraction process

(3 marks)
(Total = 10 marks)


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