laboratory extraction

In the manufacture of sodium peroxide, sodamide, sodium cyanide etc. About 50 per cent of sodium extracted is used in the manufacture of tetraethyl lead (C 2 H 5 ) 4 Pb), which is used as anti-knock agent in petrol. For producing amalgams and alloys. Amalgams are used as reducing age..

Processes for Purification - The identification and characterization of an organic compound such as molecular formula etc., must have the compound available in pure form. The process of obtaining the compound in its purest form from an impure sample or from any reaction mixture is called purificati..

The main uses of the hydrochloric acid are mentioned below: 1) Hydrochloric acid is used in the production of dyes, drugs, paints, photographic chemicals etc. 2) It is used for the production of glucose from starch. 3) It is used for the extraction of glue from bones. 4) Hydrochloric acid..

In the manufacture of fertilizers, ammonium phosphate and calcium super phosphate. In the manufacture of rayon and nylon and also in the preparation of dyes and drugs from coal tar derivatives. In the manufacture of the explosives such as Tri-nitro toluene , Tri-nitro glycerine and picric a..

. Litmus, a purple dye extracted from the lichen plant, is commonly used as an indicator in laboratories. Acids change the colour of litmus solution to red, and bases change the colour of litmus solution to blue. Turmeric is another common household indicator. A stain of turmeri..

. The trioxide is then absorbed by concentrated sulphuric acid. The product is then diluted to the desired concentration. Sulphuric acid is known as king of chemicals because of its numerous uses. It is used in the manufacturing of fertilizers, various chemicals, plastics, drugs, perfumes, paper et..

1) In manufacture of fertilizers Sulphuric acid is used in the manufacturing process of fertilizers such as ammonium sulphate, super phosphate of lime, etc. 2) In chemical industry It has a wide variety of use in the chemical industry. It is used for the manufacturing of hydrochloric acid, nitric a..

When coal is heated without air, it does not burn but produces many by-products. This process of heating coal in the absence of air is called destructive distillation of coal. The main by products are: coke coal tar amino acid liquor coal gas The destructive distillation of coal can be carried out ..

. Tidal mills were used for hundreds of years in some of the European countries. Schematic view of Turbines Fixed at the Bottom of a Reservoir The first small wave-energy device was built in Japan by Yoshio Masuda. Hundreds of navigation buoys use his system in the Sea of Japan. The Japanese are al..

black metal oxide on heating with carbon 2CuO (s) + C (s) ------- > 2Cu (s) + CO 2(g) Silver Ag No reaction with cold water or when heated in steam. No reaction with dilute hydrochloric acid or dilute sulphuric acid. Silver can be extracted by reduction but can be found ‘native&r..