wgat is the meaning of paper chromatography.?

Essentially, the paper acts as a filter. The larger molecules travel slower than the smaller molecules. This creates bands of color.

Lol, anyways... this is how it works, for paper chromatography, a spot of the solution you want to develop is placed near the bottom of a piece of high grade filter paper. Then the paper is places in a developing chamber with development solvent inside which ascends the paper by capillary action and moves the components of the spotted mixture upward at differing rates. Although the paper consists mainly of pure cellulose, the cellulos does not function as the stationary phase, it absorbs the water from the atmosphere. It is this water absorbed by the cellulose that acts as the stationary phase. As the solvent ascends the paper the compounds are partitioned between the stationary water phase and the moving solvent. Because of this, the components in the mixture that are most highly water soluble (or those that have H-bonding capacity) are the ones held back and move most slowly. Ignore that answer saying larger molecules move slower, dodecane (C12H26) will move faster than ethanol (C2H6O) since ethanol has H-bonding capacity and is more soluble in water than the alkane.

Paper Chromatography Meaning

Paper chromatography is same as any other form of chromatography. In this case paper is a stationary phase on which the sample is loaded. The a suitable solvent (s) is then allowed to ascend on this paper by capillary action. The sample components then separate depending upon their affinity with cellulose (main paper component) and you get different bands. Aminoacids can be separated on paper chromatography.

Paper chromatography (thin-layer) is effective in separating the components of a different compound, such as separating the different colors that make up ink in a marker, or separating the different components in a leaf (the different chlorophylls, carotenes, etc).

The process is very simple, and is done in most high school and introductory-level college chemistry courses.

Paper chromotography(color writing) is a way of separating mixtures. Black ink is really made of many colors. If you use alcohol as a solvent , put a dot of ink on the bottom of a one inch strip of paper towel. Put only the very tip, near the dot, in the solvent and it will creep slowly up the towel and as it passes the dot it will separate the ink into its component colors.

paper chromatography is the analytical technique that is used for purification and seperation of components.Here the stationary phase is paper and the mobile phase is the solvent.adsorption process works here.

there are different types

1.Ascending technique

2.descending tech

3.Ascendng - descending technique

4.Radial paper technique..etc.,

The suitable solvent (s) is then allowed to ascend on this paper by capillary action

when u seperate the colors on a strip of paper its cool looks like a rainbow of colors going away from the paper