Waec Model Questions Vol1 2024 Chemistry Question 4

Practice essay / theory question 4 from the 2024 Waec Model Questions Vol1 Chemistry examination. This question covers Mole concept, Empirical and molecular formula, Molar mass, Stoichiometry .

Waec Model Questions Vol1 2024 Chemistry Essay / Theory
Topics: Mole concept Empirical and molecular formula Molar mass Stoichiometry
Question 4 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • essay
Waec Model Questions Vol1 2024 Chemistry Question 4 diagram

The diagram shows the structural formula of an organic compound X.

Question Parts

( a )
Write the molecular formula of compound X.
( b )
Calculate the molar mass of X (give your answer to two decimal places).
( c )
A 3.60 g sample of X is dissolved in water. Determine:
( ) The number of moles of X present.
( ) The number of molecules of X present (use 6.022×10²³ as Avogadro’s number).
( d )
When the entire sample reacts with excess NaOH in a 1:1 molar ratio, the chloride ion from X combines with Na⁺ to form NaCl. Calculate the mass of NaCl produced.

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About This Question

This is Waec Model Questions Vol1 2024 Chemistry Question 4. It is one of the essay questions from the 2024 Waec Model Questions Vol1 Chemistry examination.

The question covers Mole concept, Empirical and molecular formula, Molar mass, Stoichiometry .

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