Lab report on Paper Chromatography

3. Materials and constituents page 5

The purpose of this lab report is to explain what exactly happened to the labs, the time that the experiment was executed and apply the results and conclusions that were deduced. Also, specify the errors that might have happened during the execution of the experiment.

In the following experiment is going to be proved that a paper can separate a mixture of colours and that every colour reacts with a different way when put onto the paper strip.

Chromatography is the name given to a method, which is very widely used for the separation of mixtures of chemicals and biochemicals, that depends on how fast a substance moves in a stream of gas or liquid past a stationary material to which the substance may be slightly attracted.

Chromatography serves mainly as a tool for the examination and separation of mixtures of chemical substances. Chromatograph

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The paper chromatography did show that a mixture of dyes could be separated into different colours. Conclusion

The proposed hypothesis was correct. Once all of the above criteria have been met, chromatography can be a simple tool for separating and comparing chemical mixtures. For the separation of a mixture, the substances making up the mixture must be evenly dispersed in a solution, a vapour, or a gas. Also, we place 10 drops of each dye into another beaker, in order to have the mixture of the three colours. orange

2) Congo red Ž

3) Light green

4. Then using the metric ruler we measure the distance between the initial and the final position (till the middle of each colour) of every dye. A little bit lower was the orange one, and much lower the red one.

It was proved also that each colour because of its different characteristics has different velocity as it moves on the paper strip. Procedure

The first step of the experiment, is to take the paper strip and fold it exactly in the middle. The least soluble and least absorbable ink colour was the Light green. The chromatographic sequence of sobbed substances is related to their atomic and molecular structures. With this knowledge, alterations or changes can be detected in the substance.

Approximate Word count = 1110
Approximate Pages = 4 (250 words per page double spaced)

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