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IGCSEChemistryCambridge (CIE)Exam Questions6. Chemical ReactionsReversible Reactions & Equilibrium

Reversible Reactions & Equilibrium (Cambridge (CIE) IGCSE Chemistry): Exam Questions

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Reversible Reactions & Equilibrium

1a2 marks

Hydrated copper sulphate crystals, CuSO4.5H2O were heated in the apparatus shown below.

Diagram of a test tube with a sealed stopper, connected to a tube immersed in an ice-filled beaker. The setup is likely for gas collection or condensation.

Indicate on the diagram using arrows

i) Where the copper sulphate crystals are placed

ii) Where heat is applied. 

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1b1 mark

What is the purpose of the ice? 

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1c2 marks

The crystals changed colour from ........................... to ..............................

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2a1 mark

Hydrated cobalt chloride crystals, CoCl2.6H2O, were heated in the apparatus shown.

6-2-q2a

Indicate on the diagram, using an arrow, where heat is applied.

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2b1 mark

The crystals change colour from .............................. to .............................. . 

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2c1 mark

What is the purpose of the ice?

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2d1 mark

Why is the tube open at point W?

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