IB Chemistry HL 3.2.1 Organic formulas and structural deduction Question Bank

Practise IB Chemistry HL 3.2.1 by deducing organic structures and connecting molecular, empirical and structural formula evidence.

Exam points

Deduce a complete structure from analytical, reaction or nomenclature evidence.
Use molecular and empirical formulas to test possible connectivities and degrees of unsaturation.
Evaluate whether a proposed organic structure is consistent with all formula and reaction constraints.

[Maximum number: 1]

An organic compound, X, with a molar mass of approximately $88 \mathrm{~g} \mathrm{~mol}^{-1}$ contains 54.5 % carbon, 36.3 % oxygen and 9.2 % hydrogen by mass.

X is a straight-chain carboxylic acid. Draw its structural formula.

$\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COOH}$ ;

Accept full or condensed structural formulas.

All question bank results loaded

3.2.1—Organic formulas question 1