Monday, 4 April 2016

4.6 understand the general rules for predicting the solubility of salts in water

Some salts are soluble whilst others are insoluble, we may get a question where we are given a salt and we have to determine whether is is soluble or insoluble, these are the rules we must learn is order to be able to do this...

- Sodium salts are soluble
- Potassium  salts are soluble
- Ammonium salts are soluble
- All sulphates except barium sulphate and calcium sulphate are soluble
- All chlorides except silver chloride are soluble
- All carbonates except sodium, potassium and ammonium carbonates are insoluble (this is because all sodium, potassium and ammonium salts are soluble remember)

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