Subjective Type

Without using column chromatography, how will you separate a mixture of camphor and benzoic acid?

Solution

Sublimation cannot be used since both camphor and benzoic acid sublime on heating. Therefore, a chemical method using $$NaHCO_{3}$$ solution is used when benzoic acid dissolves leaving camphor behind. The filtrate is cooled and then acidified with dil. $$HCl$$ to get benzoic acid.

SIMILAR QUESTIONS

Organic Chemistry

What provides surface for the vapors to cool and condense in a fractionating column?

Organic Chemistry

A form of partition, adsorption, ion exchange, or affinity chromatography in which one phase is liquid (aqueous) flowing down a column packed with the second phase, a solid is called _______.

Organic Chemistry

In column chromatography, the moving phase is?

Organic Chemistry

The $$R_{f}$$ value of A and B in a mixture determined by TLC in a solvent are $$0.65$$ and $$0.42$$ respectively. If the mixture is separated by column chromatography using the same solvent mixture as a mobile phase, which of the two compounds, A or B will elute first? Explain.

Organic Chemistry

Define the term 'elution' as applied to column chromatography.

Organic Chemistry

What is a fractionating column ? How does it help in the separation of miscible liquids ? Give one example.

Organic Chemistry

Fill in the blanks : In column chromatography ................. constitutes the stationary phase and the ........... as the molecule phase.

Organic Chemistry

Fill in the blanks : In column chromatography, the .......... absorbed component will elute with the more .......... solvent.

Organic Chemistry

Separation of organic compounds by column chromatography is due to:

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