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Thin layer chromatography can be used to help determine (select all correct answers)

I) the purity of a compound
II) the density of a compound
III) the melting point of a compound
IV) the number of components in a mixture
V) the identity of a compound
VI) the boiling point of a compound

Respuesta :

hadangcap

Answer:

The correct answers are:

  • I. the purity of a compound
  • IV. the number of components in a mixture

Explanation:

Since thin layer chromatography (TLC) is just a qualitative method, it can not tell the exact information such as the melting point, boiling point, density or identity of a compound.

But it can tell the purity or the number of components in a mixture.

If a pure compound is added on the thin layer and dip into solvent, the TLC will show only 01 spot. If a mixture is added instead of a pure compound, several spots will be observed on the thin layer.

The number of components in a mixture can only be well-determined when the spots are separated, in some case, the spots not separated clearly so it needs some other way to tell how many components are in the mixture.

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