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Buffer Solution
A buffer solution is one which resists changes in pH when small quantities of an acid or an alkali are added to it.
pH
Acid buffer Solution
An acidic buffer solution is simply one which has a pH less than 7. Acidic buffer solutions are commonly made from a weak acid and one of its salts - often a sodium salt.
CH3COOH
Alkaline Buffer Solutions
An alkaline buffer solution has a pH greater than 7. Alkaline buffer solutions are commonly made from a weak base and one of its salts.
NH3 (aq) + NH4Cl
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