Determine the formula of the organic compound if its molecule contains 12 atoms of carbon. The percentage compositions of hydrogen and oxygen are 6.48 and 51.42 respectively.
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Question

Determine the formula of the organic compound if it's molecule contains 12 atoms of carbon. The percentage compositions of hydrogen and oxygen are 6.48 and 51.42 respectively.

KnowledgeBoat · Accepted Answer

Element | % composition | At. wt. |Relative no. of atoms| Simplest ratio --------|---------------|---------|----------------------|---- Oxygen |51.42 | 16 | = 3.21 | = 1 Hydrogen | 6.48 | 1 | = 6.48| = 2 Carbon |42.1 | 12 | = 3.50| = 1 Simplest ratio of whole numbers = O : H : C = 1 : 2 : 1 Hence, empirical formula is CH₂O Since the compound has 12 atoms of carbon, so the formula is C₁₂H₂₄O₁₂.

Chemistry

Determine the formula of the organic compound if its molecule contains 12 atoms of carbon. The percentage compositions of hydrogen and oxygen are 6.48 and 51.42 respectively.

Mole Concept

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