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Describe how crystals of copper sulphate...

Describe how crystals of copper sulphate are prepared.

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Crystallization is the process by which we can obtain crystals of copper sulphate. In this process, a few drops of dilute sulphuric acid is added to water. The water is then boiled & as it starts boiling, copper sulphate powder is added with stirring. The powder must be added on till the solution becomes saturated. Afterwards, it is filtered into a china dish and allowed to cool, undisturbed. After some time the crystals of copper sulphate separate out.
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Knowledge Check

  • Two platinum electrodes were immersed in a solution of cupric sulphate and electric current passed through the solution. After some time it was found that the colour of copper sulphate disappeared with evolution of gas at the electrode. The colourless solution contains

    A
    Sulphuric acid
    B
    Platinum sulphate
    C
    Copper sulphate
    D
    Copper hydroxide

  • The metal used to recover copper from a solution of copper sulphate is

    A
    Na
    B
    Fe
    C
    Hg
    D
    Ag

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