Class 11Chemistry3 Organic Chemistry: Purification and CharacterisationPurification of Organic Compounds
EasyWhat is column chromatography?
(N/A) Column chromatography is a technique used to separate components of a mixture based on the differential adsorption of the components on an adsorbent material.
In this process,a mixture is placed on the top of a column packed with a suitable adsorbent (stationary phase),such as silica gel or alumina.
An eluent (mobile phase) is then passed through the column.
As the mobile phase moves down the column,the components of the mixture move at different rates depending on their affinity for the stationary phase versus the mobile phase.
Consequently,the components are separated into distinct bands and can be collected individually as they elute from the bottom of the column.
In this process,a mixture is placed on the top of a column packed with a suitable adsorbent (stationary phase),such as silica gel or alumina.
An eluent (mobile phase) is then passed through the column.
As the mobile phase moves down the column,the components of the mixture move at different rates depending on their affinity for the stationary phase versus the mobile phase.
Consequently,the components are separated into distinct bands and can be collected individually as they elute from the bottom of the column.
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Similar Questions
Match the type of mixture of compounds in Column-$I$ with the technique of separation/purification given in Column-$II$.
Column-$I$ Column-$II$ $A$. Two solids which have different solubilities in a solvent and which do not undergo reaction when dissolved in it $1$. Crystallisation $B$. Liquid that decomposes at its boiling point $2$. Distillation under reduced pressure $C$. Steam volatile liquid $3$. Steam distillation $D$. Two liquids which have boiling points close to each other $4$. Fractional distillation $E$. Two liquids with large difference in boiling points $5$. Simple distillation
| Column-$I$ | Column-$II$ |
|---|---|
| $A$. Two solids which have different solubilities in a solvent and which do not undergo reaction when dissolved in it | $1$. Crystallisation |
| $B$. Liquid that decomposes at its boiling point | $2$. Distillation under reduced pressure |
| $C$. Steam volatile liquid | $3$. Steam distillation |
| $D$. Two liquids which have boiling points close to each other | $4$. Fractional distillation |
| $E$. Two liquids with large difference in boiling points | $5$. Simple distillation |
Easy
View SolutionGiven below are two statements:
Statement $I$: $A$ mixture of $C_{12}H_{22}O_{11}$ (sugar) and $NaCl$ can be separated by dissolving sugar in alcohol, due to differential solubility.
Statement $II$: Rose essence from rose petals is separated by steam distillation due to its high volatility and insolubility in $H_2O$.
Statement $I$: $A$ mixture of $C_{12}H_{22}O_{11}$ (sugar) and $NaCl$ can be separated by dissolving sugar in alcohol, due to differential solubility.
Statement $II$: Rose essence from rose petals is separated by steam distillation due to its high volatility and insolubility in $H_2O$.
When is distillation under reduced pressure used?
Easy
View SolutionPaper chromatography is an example of
The best and latest technique for isolation,purification and separation of organic compounds is:
Easy
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