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(i) Explain-Column chromatography. (ii) Give the structure fot the following compund. (a) Give the butyl iodide (b) 3-Chlorobutanol |
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Answer» Solution :(i) Column Chromatography: 1. The principle BEHIND chromatography is selective distributaion of mixture of organic substance between two phases a stationary phaseand a moving phase. The stationary phase can be a solid or liquid , while the moving phase is a liquid or a gas. When the stationary phase is a solid, the moving phase is a liquidor gas 2. If the stationary phase is solid, the basis is adsorption, and when it is a liquid, the basis is partition. 3.Chromatography is defend s a techique for the separation of a mixture BROUGHT about by differential movement of the individual component through porous MEDIUM under the INFLUENCE of movingsolment. 4. In column chromatography the above principle is carried out in a long glass column (II) (a) Tertiary butyl iodide=`CH_(3)-underset(I)underset(|)overset(CH_(3))overset(|)(C)-CH_(3)` (b) 3-Chlorobutanol= `CH_(3)-underset(CI)CH-CH_(2)-CH_(2)-OH` |
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