INSTRUCTIONS TO CANDIDATES
1. Write your name, admission number in the spaces provided above. This paper consists of 4 printed pages.
2. Answer ALL the questions in the spaces provided.
Candidate’s NAME Adm number Class
PERCENTAGE
SCORE
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1. Name three solids that can be reacted with concentrated sulphuric (VI) acid to prepare
chlorine gas in the laboratory.
(3 marks)
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2. The following diagram was used to prepare aqueous Hydrogen Chloride.
State the reason why the inverted funnel is used. ( 1 mark)
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3. Burning phosphorus was lowered into a gas jar containing Chlorine gas. A white solid was
formed.
(a). Name the two substances present in the white solid. (2 marks)
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(b). Write two chemical equations for the reaction between phosphorus and chlorine. (2
marks)
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4. Hydrogen chloride was passed through a combustion tube containing iron wool.A black slid
was formed.
(a). Name the black solid formed. (1 mark)
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(b). Write a chemical reaction for the reaction that took place in the combustion tube. (1
mark)
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5. Chlorine was bubbled through potassium iodide solution.
(a). State the observations made. (1
mark)
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(b). Write the ionic equation for the reaction that took place.
(1 mark)
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6. Give the full meaning of DDTs. (1
mark)
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7. State two reasons why CFCs pollute environment. (2
marks)
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8. Write a balanced chemical equation for the reaction between chlorine and Aluminium. (1
mark)
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9. Write the names of the three products formed when chlorine is reacted with hot concentrated
sodium Hydroxide. (3
mrks)
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10. The following set up was use to prepare a certain gas M in the laboratory.
(a). Identify Liquid L and state its function. (2
marks)
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(b). Name the method of collection of the gas used above. Give a reason for the choice of the
method.
(2 marks)
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©. Name Gas M. (1 mark)
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(d). Give the chemical name of rock salt. (1
mark)
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(e). Write an equation for the reaction in flask A. (1
mark)
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11. Give two uses of Chlorine gas. (1 mark)
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12. State two observations made when a gas jar containing chlorine gas is inverted over a gas
jar containing Hydrogen chloride gas. (1
mark)
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13. Chlorine dissolves in water to form chlorine water. Write the chemical formula of the
components of chlorine water.
(2 marks)
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