Which of the following methods is used to estimate hydrogen in an organic compound ?
Correct answer: A. Combustion method
- A. Combustion method
- B. Dumas method
- C. Kjeldahls method
- D. All of the above methods are for different purposes
Explanation
In combustion analysis, an organic compound is burned in excess oxygen, and the carbon and hydrogen are measured from the CO2 and H2O produced. This allows the amounts of carbon and hydrogen to be calculated. The likely mistake is choosing b or c because Dumas and Kjeldahl methods are also elemental-analysis methods, but they are mainly used for nitrogen estimation.
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About Classification of Organic Compounds
Organic compounds are classified by carbon skeleton into open-chain, branched-chain and cyclic compounds, including homocyclic and heterocyclic types. The classification also uses functional groups to distinguish hydrocarbons, halo compounds, alcohols, aldehydes, ketones, carboxylic acids and their derivatives, which is different from naming compounds by IUPAC rules.
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