Oxygen – gas without color, a smell and taste. Is on the second ambassador of hydrogen the place by quantity on our planet. Chemically active nonmetal. Strong oxidizer. It is possible to extract oxygen, using chemical reactions of decomposition of potassium chloride (potassium chlorate) and in small amounts to receive potassium permanganate heating (potassium permanganate) and saltpeter (potassium nitrate). Also oxygen can be extracted from hydrogen peroxide.
It is required to you
- potassium chlorate (potassium chloride), sodium permanganate, potassium nitrate, hydrogen peroxide, a glass fire-resistant test tube, a bathtub with sand. A support, a glass tube with a fire-resistant stopper, a balloon, a pneumatic bathtub, activated carbon, the small-sized gas burner for chemical experiments.
Instruction
1. Fill potassium chlorate in a test tube. Cork a test tube a glass tube from fire-resistant and put on fire of the gas burner. As a result of heating from potassium chloride oxygen begins to be emitted. Put on a glass tube airof ball and collect the turned-out oxygen.
2. Fill potassium permanganate in a test tube. Put a test tube on fire of the gas burner. Catch the oxygen received as a result of potassium permanganate heating by means of a pneumatic bathtub. From 10 g of potassium permanganate oxygen about a liter will turn out.
3. Fill in a test tube a little (about 5 g) saltpeter. Cork a test tube a glass tube from fire-resistant. Fix a test tube by means of a support on a table. Under a test tube put a bathtub with sand (as a result of experience the test tube strongly heats up and can melt). The gas burner put sideways bathtubs with sand and direct fire to a test tube. The melted saltpeter will emit oxygen. Collect the received oxygen, having put on a balloon a glass tube.
4. Fix on a table by means of a support a glass test tube. Pour in it hydrogen peroxide. This very unstable connection also begins to decay on water and oxygen already in the open air. For acceleration of reaction with release of oxygen throw activated carbon or any organic matter in a test tube. Cork a test tube a glass tube from fire-resistant. Collect the received oxygen in a balloon.