Exam code: 0620 & 0971
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Hydrated copper sulphate crystals, CuSO4.5H2O were heated in the apparatus shown below.
Indicate on the diagram using arrows
i) Where the copper sulphate crystals are placed
ii) Where heat is applied.
What is the purpose of the ice?
The crystals changed colour from ........................... to ..............................
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Hydrated cobalt chloride crystals, CoCl2.6H2O, were heated in the apparatus shown.
Indicate on the diagram, using an arrow, where heat is applied.
The crystals change colour from .............................. to .............................. .
What is the purpose of the ice?
Why is the tube open at point W?
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