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Explain column chromatography with the help of a suitable diagram. |
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Answer» Solution :Column chromatorgaphy is a technique for separation of components of a mixture. The technique works on the principle of DIFFERENTIAL adsorption of the components on the adsorbent. In column chromatography `Al_(2)O_(3)` is teken as adsorbent which ACTS as stationary phase. The mixture of substances to be SEPARATED is dissolved in suitable solvent called eluent which acts as mobile phase. The components get separated due to differential adsorption by the adsorbent (stationary phase). The component which gets adsorbed on the adsorbent to the maxium extent MOVES at the slowest speed and that which gets adsorbed to the minimum extent moves at the fastest speed down the column. The elution is continued till all the components cross the column and are received in the receives separately. 
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