Question

Cobalt Chloride forms pink crystals.When they are heated,water is evolved and they turn blue.

.Explain how we could use Cobalt Chloride as a test for water??

Answer 1

The Cobalt Chloride-Hexahydrate I remember is more purple than pink. It is easily dehydrated into blue crystals. The anhydrate is highly hydroscopic (adsorbs water) returning to purple (pink) color. In the anhydrate form, appropriately sized quantities can be placed into desiccators to adsorb and indicate presence of water vapor in the storage area of the desicator.

Answer 2

Thank you very much. Please upload answers to such questions ALLAH HAFIZ

Answer 3

Thnx so much 😊

Answer 4

Thanks hope it will work😊

Answer 5

[AI-generated answer — Explain Bot]

Cobalt Chloride can be used as a test for water because of its unique property of changing color when it comes into contact with moisture.

Here's a step-by-step explanation of how to use Cobalt Chloride as a test for water:

1. Obtain a sample of the substance you want to test for the presence of water. This could be a solid or a liquid.

2. Take a small amount of Cobalt Chloride and sprinkle it onto the substance. Make sure the Cobalt Chloride is in its solid form.

3. Observe the color of the Cobalt Chloride. If it is pink or reddish, it means that water is present in the substance.

4. Now, heat the mixture containing Cobalt Chloride and the substance. You can do this by gently heating it over a Bunsen burner or using some other heat source.

5. Monitor the change in color. If water is present in the substance, the Cobalt Chloride will undergo a chemical reaction where water is evolved, and its color will change from pink to blue.

6. If the color changes to blue, it confirms the presence of water in the substance being tested.

It is important to note that while Cobalt Chloride is a sensitive test for the presence of water, it is not specific to water alone. Other substances, such as acids, may also cause a color change with Cobalt Chloride. Therefore, it is advisable to confirm the presence of water using other tests or methods, if needed.