define buffer solution explain its types explain amphotesic nature of water
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Buffer Solution is a water solvent based solution which consists of a mixture containing a weak acid and the conjugate base of the weak acid, or a weak base and the conjugate acid of the weak base. They resist a change in pH upon dilution or upon the addition of small amounts of acid/alkali to them.
The pH of Buffer Solutions shows minimal change upon the addition of a very small quantity of strong acid or strong base. They are therefore used to keep the pH at a constant value.
Water has the ability to act as an acid as well as a base. Such behaviour is known as amphoteric nature of water. ... H2O acts as an acid towards NH3 and as a base towards HCl. Therefore, H2O is amphoteric.
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