Electrolyte & Types of Electrolytes



ELECTROLYTE

A substance that forms ions on dissolving in water is called electrolyte. The solution of electrolyte can allow electric current to pass through it. There are two types of electrolytes:

STRONG ELECTROLYTE

These are those electrolytes, which are largely or almost completely ionized in solution. Their conductance ratio A /A o approaches unity and does not measure the true degree of dissociation. Aqueous solution of strong electrolytes are very good conductors of electricity. Examples: Salts such as NaCI ,CH3COONa etc. Acids such as HCl, H2SO4 etc. Bases as NaOH, KOH etc.

WEAK ELECTROLYTE

These are those electrolyte, which undergo very little ionisation in solution. Their conductance ratio is a measure of the degree of dissociation. Aqueous solution of weak electrolytes is poor conductor of electricity. Common examples of weak electrolytes are organic acids such as acetic acid, benzoic acid etc. organic bases such as methylamine, aniline etc, inorganic acids such as carbonic acid, hydro cyanic acid etc. inorganic bases such as ammonium hydroxide etc.

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