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Give the importance of buffer solution. |
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Answer» Solution :Buffer solution can be used in chemical and biochemical reactions and espectially in analytical chemistry . (i)In biological process : e.g., The pH of our blood :7.36 to 7.42 `(H_2CO_3 + NaHCO_3)` . In human body buffer solutions CONTAINING `[HCO_3^-]`and `[CO_3^(-2)]`as well as `[H_2PO_4^-]` and `[HPO_4^(2-)]` are present . (ii) In industrial process :The use of buffers is an important part of many industrial process. (i)In electroplating (ii) In the manufacture of leather,photographic materia and dyes , (iii) In the preservation of food articles. (iii)In preparation of medicines : In preparation of medicine the definite pH value is very effective , therefore use of buffer is essential. (iv) In COSMETIC items: By buffer formation pH is maintain and COSMETICS do not become harmful , that care is taken. (v) In agriculture : In agriculture , the formation of buffer for crop is carried out by carbonate , bicarbonate , phosphate and organic acid. (vi) In industries : In production of paper , dyes , ink, drugs , paints etc. By formation of buffer pH is maintain. (vii) In analytical chemistry : In group-II `(HCl+ H_2S)`, In group-III `(NH_4Cl+ NH_4OH)` , In group-IV`(NH_4Cl + NH_4OH + (NH_4)_2CO_3)`from buffer solution, which maintain definite pH and selective precipitation of positive ions take PLACE. |
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