IB Chemistry SL 1.4.4 Empirical and Molecular Formulas Question Bank

Practise IB Chemistry SL 1.4.4 with questions deriving empirical and molecular formulae from composition data and molar mass.

[Maximum number: 1]

A hydrocarbon has the empirical formula $\mathrm{C}_{3} \mathrm{H}_{7}$ . When 1.17 g of the compound is heated to $85^{\circ} \mathrm{C}$ at a pressure of 101 kPa it occupies a volume of $400 \mathrm{~cm}^{3}$ .

Deduce the molecular formula of the compound.

$\quad \mathrm{C}_{6} \mathrm{H}_{14}$ ;

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1.4.4—Empirical and molecular formulas question 1