nitrogen dioxide

Before catalytic oxidation of sulphur dioxide, impurities like dust, arsenic etc. have to be removed otherwise they spoil the catalys..

Sulphur Dioxide (SO 2 ) - Sulphur dioxide was known from ancient times and Romans used it as a general cleansing agent. In 1770 , J.Priestly prepared the gas by the action of hot conc. Sulphuric acid on mercury and called it sulphurous acid. Lavosier studied the struct..

Carbon dioxide is present in the Earth's atmosphere to an extent of 0.03% by volume. Carbon dioxide is produced during combustion of fossil fuels, respiration of humans, animals and plants, fermentation and volcanic eruptions. ..

Sulphur dioxide was known from ancient times and Romans used it as a general cleansing agent. In 1770 , J.Priestly prepared the gas by the action of hot conc. Sulphuric acid on mercury and called it sulphurous acid. Lavosier studied the structure and proved that it was an oxide of..

CO 2 is prepared by heating carbonates (except Na 2 CO 3 and K 2 CO 3 ) and bicarbonates or by adding acid to carbonates which releases CO 2 . In the laboratory, CO 2 is prepared by the action of dilute hydrochloric acid on marble chips. ..

>The nitric oxide so formed then reacts with more oxygen to form nitrogen dioxide. Nitrogen dioxide so formed, gets washed down by rain and forms nitrates and nitrites in the soil. Plants absorb these of nitrates and nitrites from the soil and convert them in..

A peroxide is a metallic oxide which gives hydrogen peroxide by the action of dilute acids. They contain more oxygen than the corresponding basic oxide, e.g., sodium, calcium and barium peroxides. Dioxides like PbO 2 and MnO 2 also contain higher percentage of o..

Sulphur dioxide(SO 2 ) is one of the dangerous pollutant with a potentiality to form sulphuric acid, when mixed with water vapour. Water vapour commonly available in air can mix with SO 2 gas and produce sulphuric acid. Dry and Wet Acid Deposition or Acid Ra..

: Rhizobium, a nitrogen fixing bacteria present in the roots of leguminous plants, fixes atmospheric nitrogen to the soil. Azotobacter and Clostridium are other free-living nitrogen fixing bacteria. Physical fixation When nitrogen fixation is brought about by..

When carbon dioxide is passed through lime water, it becomes milky due to formation of calcium carbonate. When slaked lime is exposed to air, it absorbs carbon dioxide to form calcium carbonate...