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Question

An organic compound containing C and H gave the following analysis: C=52%,H=13% and the remaining, oxygen. Its empirical formula would be:

A
CH3O
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B
C2H6O
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C
C2H4O
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D
C2H2O
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Solution

The correct option is B C2H6O
Calculation of empirical formula:
% of oxygen will be [100(52+13)]%=35%

Element% in compoundAtomic massNo. of molesSimple ratioC52125212=4.334.332.18=2H131131=13132.18=6O35163516=2.182.182.18=1

So, the empirical formula is C2H6O.

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