Uses of Hydrochloric Acid Bromine Iodine Fluorine Chlorine Bleaching Powder:
Uses of Hydrochloric Acid:
In the manufacture of chlorine and other metal chlorides.
In the iron and steel industry.
In dying and calico printing.
In medicine for curing gastric digestion troubles.
In pickling of iron and steel which are to be tinned or galvanized.
In the preparation of aqua regia for dissolving noble metals like Au (gold), Pt (platinum), etc.
As a catalyst in the manufacture of glucose from starch.
In the extraction of glue from bones.
In the manufacture of dyes.
As a valuable reagent in the laboratory and other research institutes.
Uses of Bromine:
In the manufacture of organic dyes.
In the preparation of silver bromide used in photography.
In medicine in the form of potassium bromide used as a tranquillizer and calcium bromide used as a sedative.
In the manufacture of bromoacetone and xylyl bromide used as tear gases.
In the preparation of ethylene bromide used as anti-knocking agent.
As a disinfectant and germicide.
In the preparation of ethyl bromide used as a synthetic reagent in organic chemistry.
As an important oxidising agent in the laboratory.
In the detection of double bonds in organic chemistry.
Uses of Iodine:
As an essential ingredient for life in many plants and animals.
In the manufacture of a large number of dyes.
In the preparation of silver iodide used in photography.
In the manufacture of a large variety of pharmaceutical chemicals like iodoform and indole used as disinfectants; iodex and tincture of iodines as medicines.
As a germicide.
In the treatment of goitre disease caused by the deficiency of iodine in the diet.
In the manufacture of compounds of iodine like iodates, iodides etc.
In the determination of the amount of unsaturation in organic compounds.
Uses of Fluorine:
In the preparation of organic compounds (plastics) such as Teflon (-CF2-CF2-)n.
In the manufacture of Freon (Cl2CF2) used in refrigerators and air conditioning plants.
In the preparation of insecticides (CCl2F).
In the production of uranium hexafluoride (UF6) used in the separation of U235 and U238 in atomic energy.
In the preparation of chlorine tetrafluoride which was used in liquid incendiary bombs during world war II.
Uses of Bleaching Powder:
In the manufacture of chloroform.
In rendering wool unshrinkable.
As an oxidising agent in many chemical industries.
As a germicide for the sterilization of drinking water.
As a disinfectant.
As a bleaching agent for cotton, linen, wood pulp in the textile industry and paper factories.
In the rapid generation of chlorine gas by treatment with dilute acid. This chlorine is known as available chlorine.
Uses of Chlorine:
In the purification of water for destroying disease-producing bacteria.
As an antiseptic in the form of its NaClO for destroying toxic organisms particularly in open wounds.
As a disinfectant in the form of its compound like NaClO and CaOCl2 (bleaching powder) for destroying germs.
In the manufacture of compounds of chlorine-like chloroform, carbon tetrachloride and sulphur monochloride.
In the extraction of metals like gold, platinum and tin.
In chemical warfare in the form of phosgene (COCl2), mustard gas (ClC2H4-S-C2H4Cl) and tear gas (CCl3.NO2).
As a bleaching agent for bleaching articles like cotton, linen textiles, wood pulp.
In the manufacture of plastics like polyvinyl chloride (P.V.C) and insecticides like D.D.T and benzene hexachloride (B.H.C).
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