Procedure for disposal of chemical wastes, Science

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PROCEDURE : Your Counsellor will be performing the following experiments. You are advised to observe the disposal methods carefully.

Experiment 1: Test for studying miscibility/solubility in water

Acetone and sodium hydroxide are tested individually for miscibility/solubility in water.

Experiment 2: Test for studying volatility

Diethyl ether and ethyl acetate are tested for volatility using watch glasses.

Experiment 3: Test for studying the process of emulsification

Miscibility of toluene is tested with

1. water and,

2. soap or detergent solution.

Experiment 4 : Test for studying suitable chemical treatment for changing the chemical nature of a substance which is highly reactive with water

The reactivity of sodium is tested with

1. Water,

2. Ethanol, and

3.Ethanol containing anhydrous sodium carbonate.

Experiment 5: Test for studying water treatment method for a substance which is fairly reactive with water Reactivity of calcium oxide with water is tested.

Experiment 6: Test for studying suitable chemical treatment for changing the chemical nature of acidic substances

The difference in reactivity of sulphuric acid with water is tested in the absence and, presence of sodium carbonate.

Experiment 7: Test for studying suitable chemical treatment for changing the chemical nature of organic bases which are immiscible with water

Miscibility of aniline with water is tested in the absence and, presence of dilute hydrochloric acid.


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