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Chemistry · Unit 4 · Properties and structure of organic materials · Structure of organic compounds

Analyse data to determine the structural, molecular and empirical formula of organic compound and the percentage composition of elements in organic compounds. Chem istry 2025 v1.3 Physical properties and trends

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Question 1

An organic compound contains carbon, hydrogen and oxygen. Combustion analysis shows the compound has a molar mass of 60.0 g mol\(^{-1}\) and contains 40.0% carbon by mass. Determine the molecular formula of the compound.

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Question 2

Analyse the combustion data to determine the empirical formula of the hydrocarbon compound.

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Question 3

A hydrocarbon compound contains 85.7% carbon and 14.3% hydrogen by mass. Analyse the data to determine the empirical formula of this compound.

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