Hydration shell, number (Salze-62) In the chemical laboratory is a solution, which with 1 M CuSO4 printed is. What exactly does this mean? How was the solution made? How is the proportion cation – anion – particles of water ?

  Exercise: Salze-62    

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In the chemical laboratory is a solution, which with 1 M CuSO₄ printed is.
What exactly does this mean? How was the solution made? How is the proportion cation – anion – particles of water ?

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Solution:

1. 1 M CuSO₄ means that 1 mol copper sulphate is dissolved per litre (solvent, very commonly water).
2. Manufacture: 1 mol weighs 159.6 grams. So 159.6 grams of copper sulfate are weighed and added to the water until the 1 litre mark is reached. The own volume of copper sulphate need not be taken into account.
3. Approximately 1 liter of water is needed = 1000 grams. This would be (1000/18) 55.5 mol water. So the ratio of ions is:
       Cu²⁺ to SO24 to water = 1 : 1 : 55.5

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