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Describe how you can purify a sample of toluene suspected to be contaminated with benzene. Obtain...

Describe how you can purify a sample of toluene suspected to be contaminated with benzene.

Obtain the substance information about toluene and benzene to design an experiment that will let you achieve your objective of purifying the sample of toluene.

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Answer #1

If there is an impurity of benzene in toluene, it can be seperated.

The boiling point of toluene is around 110.60C and that of benzene is 80.10C.

Distillation is the process of segragating (seperating) substances from the mixture of liquids by utilizing selective boiling and condensation. This process uses differences in the volitility of the components which are to be distilled.

In case of benzene and toluene, benzene is volatile (melting point is 80.10C) thus it distills out first.The mixture benzene and toluene is seperated in a distillation column. The first portion is comprising of around toluene and the bottom portion consists of the benzene which is the impurity.

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