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Organic Compounds

Percentage of...

Question

Percentage of carbon in an organic compound is determined by:

A

Dumas method

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B

Kjeldahls method

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C

Carius method

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D

Liebigs method

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Solution

The correct option is C Liebigs method
A known mass of organic compound is heated in the presence of pure oxygen. The carbon dioxide and water formed are collected and weighed. The percentages of carbon and hydrogen in the compound are calculated from the masses of carbon dioxide and water.
Carius method for determining Halogens.
Dumas and Kjeldahl's method for determining Nitrogen.

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