Sodium Hydroxide

Some important chemcial compounds – properties and uses.

Compounds are defined as substances composed of two or more different elements that are chemically combined. Both salt and water are compounds. Some important chemical compound and their uses are as follows:- NaCl sodium chloride (table salt, used in solutions for contact lens) ZnO zinc oxide (used in some sunscreens and diaper rash ointment) NaF sodium fluoride (active ingredient in toothpaste) SeS selenium sulfide (in selsium blue shampoo) NaNO2 sodium nitrite (preservation in meat such as bacon) NaClO sodium hypochlorite (bleach) N2O dinitrogen oxide (laughing gas used for some dental work) Baking powder NaHCO3; sodium bicarbonate Used for baking for ... Read more

Refining of ores Metallurgy

 Refining of ores Metallurgy Metallurgy Metallurgy is the process of obtaining metals from ores. It may be defined as the processes which are involved in the extraction of metals from their ores and then refining them for use are known as metallurgy. Steps of Metallurgy: Metals can be extracted from their ores by following processes: Enrichment of ore or Concentration of Ore Conversion of concentrated ore into metal oxide Reduction of metal Oxide to metal Purification or Refining of Impure metal   ENRICHMENT OF ORE OR CONCENTRATION OF ORE   Before extracting the metal from an ore, it is necessary to remove ... Read more

Laboratory method of preparation acetic acid

Laboratory method of preparation acetic acid Ethanoic Acid (Acetic acid – CH COOH) Ethanoic acid is the second member of the homologous series of carboxylic acids. In other words, vinegar contains about 5 to 8% acetic acid. We will now describe two methods for the manufacture of ethanoic acid. In the first method, ethanoic acid is obtained as a dilute solution called vinegar.   Manufacture of Ethanoic Acid From Ethanol Ethanoic acid is manufactured in the form of vinegar by the bacterial oxidation of ethanol. Ethanol is oxidized by the oxygen of air in the presence of Acetobacter bacteria to ... Read more