Question

in chromatography how do you known that substance is pure

Answer 1

Answer:

A paper chromatogram can be used to distinguish between pure and impure substances. (the answer is in explanation)

Explanation:

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A pure substance produces one spot on the chromatogram. an impure substance produces two or more spots.

Answer 2

Answer:

Explanation:

We can use melting and boiling points and chromatography to test for pure substances. Pure substances have a sharply defined (one temperature) melting or boiling point. Impure substances have a temperature range over which they melt or boil.