animation of preparation of oxygen gas

Heat and Thermodynamics..

Heat..

Main source of oxygen are the plants which evolve oxygen as a by-product of photosynthesis. It is used chiefly by most of the living organisms in their aerobic respiration except certain anaerobics. Oxygen acts as a limiting factor in the distribution of animalsh..

Oxygen is very essential for the existence of human life on Earth. It is the most abundant element on the surface of the Earth. In a free state, it is present in the Earth's atmosphere to an extent of about 21% by volume, (23.15% by mass) In the combined form, it constitutes about 88% by ..

. Although the solubility of oxygen in water is only 4% at STP, it is enough for fish and other aquatic animals and plants to breathe. Remember : STP = Standard temperature and pressure. Temperature = 0 o C Pressure = 76 cm or 760 mm of mercur..

It is a mixture of gaseous hydro-carbons. It is found usually along with petroleum deposits. Natural gas consists mainly of 85% methane, 10% of ethane and 3% of propane and butane. It may also contain nitrogen, oxygen, carbon di-oxide and hydrogen sulphid..

It is a mixture of gaseous hydro-carbons. It is found usually along with petroleum deposits. Natural gas consists mainly of 85% methane, 10% of ethane and 3% of propane and butane. It may also contain nitrogen, oxygen, carbon di-oxide and hydrogen sulphide. Its great advantage i..

According to Boyle's Law, the volume of a gas varies inversely as the pressure, temperature remaining constant, i.e., According to Charles' law, the volume of a gas varies directly as the absolute temperature, pressure remaining constant, i.e. Both, these laws can be combined as..

1. Oxygen is a colorless, odorless and tasteless gas. 2. It is neutral to litmus. 3. It rekindles a glowing splinte..

Tests for Oxygen - 1. Oxygen is a colorless, odorless and tasteless gas. 2. It is neutral to litmus. 3. It rekindles a glowing splinter. 4. When mixed with colorless nitric oxide, it forms reddish brown fumes of nitrogen dioxide. 5. It is absorbed by alkaline..