Complete combustion of 0.74 g of an organic compound containing only C, H and O gives 1.76 g of CO2 and 0.90 g of H2O. The empirical formula is (C = 12, H = 1, O = 16)

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JEE Main levelSingle correct optionDifficulty 2 of 3mc170

Complete combustion of $0.74 g$ of an organic compound containing only C, H and O gives $1.76 g$ of $CO X_{2}$ and $0.90 g$ of $H X_{2} O$ . The empirical formula is (C = 12, H = 1, O = 16)

A $C X_{4} H X_{10} O$
B $C X_{2} H X_{5} O$
C $C X_{4} H X_{8} O$
D $C X_{4} H X_{10} O X_{2}$

Answer: A

Mass of C = 1.76 x 12/44 = 0.48 g; mass of H = 0.90 x 2/18 = 0.10 g; mass of O = 0.74 - 0.48 - 0.10 = 0.16 g. Moles: C 0.04, H 0.10, O 0.01, ratio 4 : 10 : 1. Empirical formula is C4H10O.

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Complete combustion of 0.74 g of an organic compound containing only C, H and O gives 1.76 g of COX2​ and 0.90 g of HX2​O. The empirical formula is (C = 12, H = 1, O = 16)

Answer: A

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Complete combustion of $0.74 g$ of an organic compound containing only C, H and O gives $1.76 g$ of $CO X_{2}$ and $0.90 g$ of $H X_{2} O$ . The empirical formula is (C = 12, H = 1, O = 16)