Igcse Model Questions Vol1 2018 Chemistry Question 4

Practice essay / theory question 4 from the 2018 Igcse Model Questions Vol1 Chemistry examination. This question covers Mole concept, Empirical and molecular formula, Combustion analysis, Stoichiometry of reactions .

Igcse Model Questions Vol1 2018 Chemistry Essay / Theory
Topics: Mole concept Empirical and molecular formula Combustion analysis Stoichiometry of reactions
Question 4 IGCSE_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • essay

A colourless liquid organic compound was isolated and its structural diagram is shown in the illustration. The labelled atoms are C1, C2, C3, C4 (carbons) and O1, O2 (oxygens).

Question Parts

( a )
State the type of functional group present in the compound and describe the nature of the bonding between the atoms.
( b )
A 5.00 g sample of the compound is completely combusted. The masses of carbon dioxide and water produced are 10.0 g and 4.1 g respectively. Calculate the mass of carbon, hydrogen and oxygen originally present in the sample.
( c )
Using the masses obtained in part (b), determine the empirical formula of the compound.
( d )
The molar mass of the compound is known to be 88.1 g mol⁻¹. From the empirical formula obtained in (c), calculate the molecular formula and confirm that it is consistent with the structural diagram.

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About This Question

This is Igcse Model Questions Vol1 2018 Chemistry Question 4. It is one of the essay questions from the 2018 Igcse Model Questions Vol1 Chemistry examination.

The question covers Mole concept, Empirical and molecular formula, Combustion analysis, Stoichiometry of reactions .

View More Igcse Model Questions Vol1 2018 Chemistry Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

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