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Question Q154) 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 [AIPMT (Prelims)-2008]



SOLUTION

% oxygen = 100 - 38.71 – 9.67 = 61.62%
C = 38.71 ∴ Number of atoms 38.71/12 = 3.22
H = 9.67 ∴ Number of atoms 9.67/1 = 9.67
Thus Hydrogen atoms are three times the carbon
Option b is correct
Answer: (b)