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Some Basic Concepts of Chemistry question

2008 · Q105
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Some Basic Concepts of Chemistry question

2008 · Q105

NEETChemistrySome Basic Concepts of ChemistryMCQ+4 / −1
An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave C, 38.71% and H, 9.67%. The empirical formula of the compound would be
  1. A
    CHO
  2. B
    CH4O
  3. C
    CH3O
  4. D
    CH2O
View written solutionFree

Correct answer: C

Element%Atomic massmole ratiosimple ratio
C38.7112$${{38.71} \over {12}} = 3.22$$$${{3.22} \over {3.22}} = 1$$
H9.671$${{9.67} \over 1} = 9.67$$$${{9.67} \over {3.22}} = 1$$
O51.6216$${{51.62} \over {16}} = 3.22$$$${{3.22} \over {3.22}} = 1$$

Hence empirical formula of the compound would be CH3O
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