Question

How will you prepare crystals of copper sulfate?​

Answer 1

Aims

To prepare pure, dry hydrated copper(II) sulfate crystals starting from copper oxide

Method

1- place some sulfuric acid in a beaker and warm it in a water bath

2-add a spatula of copper(II) oxide powder to the acid and stir with a glass rod

3-continue adding copper(II) oxide powder until it is in excess

4-filter the mixture to remove the excess copper(II) oxide

5-pour the filtrate (the copper(II) sulfate solution) into an evaporating basin

6-heat the copper(II) sulfate solution to evaporate half the water

7-pour the solution into an evaporating basin and leave to allow all the water to evaporate

Result

Record the appearance of the copper(II) sulfate crystals, including their colour and shape

Analysis

Hydrated copper(II) sulfate crystals should be blue and regularly shaped. Describe how your crystals compare to this description. Suggest an explanation for any differences.

Answer 2

Answer:

• Preparation of Solution. Take about 25-30 ml of water and add to it small quantities of the powdered crude copper sulphate. ...
• Filtration of the Solution and Concentration of the Filtrate to Crystallisation point. ...
• Cooling the Hot Saturated Solution. ...
• Separation of Crystals and Drying

Explanation:

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