Waec Model Questions Vol1 2024 Chemistry Question 3

Practice practical question 3 from the 2024 Waec Model Questions Vol1 Chemistry examination. This question covers Chemical Bonding .

Waec Model Questions Vol1 2024 Chemistry Practical

Topic: Chemical Bonding

Question 3 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • practical

A sample of an unknown metal oxide is analysed by reduction with hydrogen gas. The experimental data are as follows: - Mass of empty crucible: 0.500 g - Mass of crucible containing the oxide before reduction: 2.500 g - Mass of crucible containing the reduced metal after the reaction: 1.800 g Using the data provided, answer the questions below.

Question Parts

( a )

Calculate the mass of oxygen that was removed from the oxide during reduction.

( b )

Determine the number of moles of oxygen that were removed.

( c )

If the metal in the oxide is a single element, deduce the empirical formula of the oxide.

( d )

Suggest a possible metal that could form the oxide MO₂, using the atomic mass obtained in part (c). Give two plausible candidates.

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About This Question

This is Waec Model Questions Vol1 2024 Chemistry Question 3. It is one of the practical questions from the 2024 Waec Model Questions Vol1 Chemistry examination.

The question covers Chemical Bonding .

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