Acids, bases & salts

Salt — লবণ

Quick answer

An ionic compound formed by neutralizing an acid with a base; table salt NaCl\mathrm{NaCl} is the most familiar example.

Definition

In chemistry, a salt is the ionic compound formed when an acid neutralizes a base, swapping its hydrogen for a metal or ammonium ion. Table salt, sodium chloride (NaCl\mathrm{NaCl}), is just the best-known member of a huge family: Epsom salt (MgSO4\mathrm{MgSO_{4}}), baking soda (NaHCO3\mathrm{NaHCO_{3}}) and washing soda (Na2CO3\mathrm{Na_{2}CO_{3}}) are all salts. Salts are usually crystalline solids with high melting points, and many, like NaCl\mathrm{NaCl}, dissolve happily in water.

For example

Sea salt harvested in Cox's Bazar is mostly NaCl\mathrm{NaCl} with traces of other salts; the iodized salt in your kitchen carries iodine as KIO3\mathrm{KIO_{3}} to protect your thyroid.

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