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Physical test for water. A physical test to see if a sample of water is pure is to check its boiling point. A sample of the liquid is placed in a suitable container such as a boiling tube and gently heated. Using a thermometer, you can check if the boiling point is exactly 100 oC.
- Water: Chemical Tests | Cambridge (CIE) IGCSE Chemistry Revision Notes 2021
Chemical tests for water. The presence of water is commonly...
- Water: Chemical Tests | Cambridge (CIE) IGCSE Chemistry Revision Notes 2021
Chemical tests for water. The presence of water is commonly tested for using anhydrous cobalt (II) chloride or anhydrous copper (II) sulfate. Cobalt (II) chloride. Anhydrous cobalt (II) chloride, CoCl 2, is blue. Hydrated cobalt (II) chloride, CoCl 2 •6H 2 O is pink. So, anhydrous cobalt (II) chloride can be used to test for water.
Learn how to separate and analyse chemicals using filtration; crystallisation; paper chromatography; simple and fractional distillation; flame tests.
There are several methods for testing for water, including physical tests, such as checking for condensation, and chemical tests, such as using litmus paper or anhydrous copper (II) sulfate. The choice of method will depend on the type and concentration of water in the sample being tested.
Testing for water. This page looks at two common tests for the presence of water - anhydrous copper(II) sulfate and cobalt chloride paper. Testing using anhydrous copper(II) sulfate. What is anhydrous copper(II) sulfate? The familiar blue copper(II) sulfate crystals contain molecules of water bound into the crystal structure. We call this water ...
Topic Specification. Potable Water Revision. All living things need water to survive. For human beings, this water must be potable. Potable water can be produced from fresh water using filtration and sterilisation. It can also be produced from sea water using desalination, though this process is much more expensive. What is Potable Water?
Home. CIE IGCSE Chemistry. Study Notes. 10.1.1 Testing For Water%3A Chemical Methods And Purity Analysis. Contents. Previous Topic. Next Topic. 1. States of Matter. 2. Atoms, Elements and Compounds. 3. Stoichiometry. 4. Electrochemistry. 5. Chemical Energetics. 6. Chemical Reactions. 7. Acids, Bases, and Salts. 8. The Periodic Table. 9. Metals. 10.
