Question

Write the property of common salt

Answer 1

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Property of common salt :

Salt is a chemical compound with a number of interesting properties:

●Crystals or white crystalline powder.

●Transparent and colourless in crystalline form – rather like ice.

●Crystallises in the isometric system, usually in the form of cubes.

●Soluble in water (35.6g/100g at 0°C and 39.2g/100g at 100°).

●Slightly soluble in alcohol, but insoluble in concentrated hydrochloric acid.

●Melts at 801°C and begins to vaporize at temperatures just slightly above this boiling point 1,413°C.

●Hardness of 2.5 on the MOH scale of hardness.

●Specific gravity of 2.165.

●Non-combustible – low toxicity.

●Hygroscopic – absorbs moisture from damp atmospheres above 75 per cent relative humidity – below this, it will dry out.

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