Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationPurification of Organic Compounds
MediumExplain the principle of paper chromatography.
(N/A) Paper chromatography is a type of partition chromatography.
It involves the use of a special quality paper known as chromatography paper.
This paper contains water trapped in it,which acts as the stationary phase.
$A$ solution of the mixture is spotted on the base of this chromatography paper.
The paper strip is then suspended in a suitable solvent or a mixture of solvents,which acts as the mobile phase.
This solvent rises up the chromatography paper by capillary action and flows over the spot.
The components of the mixture are selectively retained on the paper based on their differing partition coefficients between the stationary phase (water) and the mobile phase.
As the mobile phase moves,the components travel to different heights on the paper.
The final paper strip obtained is known as a chromatogram.
It involves the use of a special quality paper known as chromatography paper.
This paper contains water trapped in it,which acts as the stationary phase.
$A$ solution of the mixture is spotted on the base of this chromatography paper.
The paper strip is then suspended in a suitable solvent or a mixture of solvents,which acts as the mobile phase.
This solvent rises up the chromatography paper by capillary action and flows over the spot.
The components of the mixture are selectively retained on the paper based on their differing partition coefficients between the stationary phase (water) and the mobile phase.
As the mobile phase moves,the components travel to different heights on the paper.
The final paper strip obtained is known as a chromatogram.
Explore More
Similar Questions
Which two organic compounds are purified by the sublimation technique?
Easy
View SolutionGive the information of the following in short.
$(i)$ Fractional column $(ii)$ Theoretical plate $(iii)$ Mechanism of fractional column.
$(i)$ Fractional column $(ii)$ Theoretical plate $(iii)$ Mechanism of fractional column.
Medium
View SolutionThe correct match between items of List-$I$ and List-$II$ is
List-$I$ List-$II$ $A$. Coloured impurity $(p)$. Steam distillation $B$. Mixture of $o-$nitrophenol and $p-$nitrophenol $(q)$. Fractional distillation $C$. Crude naphtha $(r)$. Charcoal treatment $D$. Mixture of glycerol and sugars $(s)$. Distillation under reduced pressure
| List-$I$ | List-$II$ |
| $A$. Coloured impurity | $(p)$. Steam distillation |
| $B$. Mixture of $o-$nitrophenol and $p-$nitrophenol | $(q)$. Fractional distillation |
| $C$. Crude naphtha | $(r)$. Charcoal treatment |
| $D$. Mixture of glycerol and sugars | $(s)$. Distillation under reduced pressure |
DifficultJEE MAIN 2018
View SolutionAniline-water mixture can be separated by
Easy
View SolutionGiven below are two statements:
Statement $I$: Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillation.
Statement $II$: The vapours rising up in the fractionating column become richer in high boiling component of the mixture.
Statement $I$: Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillation.
Statement $II$: The vapours rising up in the fractionating column become richer in high boiling component of the mixture.
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo