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Question

# An organic compound contains carbon, hydrogen and oxygen. Its chemical analysis gave C,38.71% and H,9.67%. The empirical formula of compound would be

A
CH3O
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B
CH2O
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C
CHO2
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D
CHO
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Solution

## The correct option is A CH3OPercentage of Carbon=38.71 Percentage of Hydrogen=9.67 Total percentage =100 % As the compound contains Carbon, hydrogen and oxygen only. Then percentage of oxygen =100−38.71−9.67=51.62 ∴C:H:O=38.7112:9.671:51.6216 =3.225:9.67:3.226=1:3:1 ∴ Empirical formula =CH3O

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