# How to Mix Copper Sulfate With Water at 3%

Written by oxana fox
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Copper sulphate is an inorganic salt with the chemical formula CuSO4. This compound is in the form of blue crystals. Diluted solutions of copper sulphate are commonly used as herbicide and pesticide agents as well as to treat swimming pools and fish tanks. When given as a weight per cent (such as 3 per cent), the concentration reflects the ratio between the mass of the dissolved copper sulphate and the total mass of the solution.

Skill level:
Moderately Easy

• Calculator
• Scale
• Beaker

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## Instructions

1. 1

Find out the mass of copper sulphate needed using the following equation:

mass (CuSO4) / (mass (CuSO4) + mass (water)) = 0.03; 0.03 is 3 per cent written in the decimal form. For example, if the amount of water is 500 grams then mass (CuSO4) = (500 x 0.03) / (1-0.03) = 15.46 grams.

2. 2

Weigh the calculated amount of copper sulphate (15.46 grams, in this example) on the scale.

3. 3

Pour water (500ml in this example) into the beaker.

4. 4

Add copper sulphate to the water in the beaker.

5. 5

Stir the solution until the salt dissolves completely.

#### Tips and warnings

• Wear gloves when work with copper sulphate since this compound is toxic.

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