Waec Model Questions Vol1 2018 Chemistry Question 4

Practice essay / theory question 4 from the 2018 Waec Model Questions Vol1 Chemistry examination. This question covers Mole concept, Empirical formula, Molecular formula, Stoichiometry, Acid‑base equilibrium .

Waec Model Questions Vol1 2018 Chemistry Essay / Theory

Topics: Mole concept Empirical formula Molecular formula Stoichiometry Acid‑base equilibrium

Question 4 WAEC_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • essay

The diagram shows the structural formula of an unknown organic acid X.

Question Parts

( a )

Determine the empirical formula of compound X from the structural diagram.

( b )

A 0.0180 g sample of X is dissolved in water and titrated with 0.0200 M NaOH. The equivalence point is reached after 10.0 mL of NaOH solution. Calculate the molar mass of X.

( c )

Using the empirical formula obtained in part (a) and the molar mass from part (b), determine the molecular formula of X and state the common name of the compound.

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About This Question

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

The question covers Mole concept, Empirical formula, Molecular formula, Stoichiometry, Acid‑base equilibrium .

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