Waec Model Questions Vol1 2020 Chemistry Question 3

Practice practical question 3 from the 2020 Waec Model Questions Vol1 Chemistry examination. This question covers Chemical Bonding .

Waec Model Questions Vol1 2020 Chemistry Practical

Topic: Chemical Bonding

Question 3 WAEC_MODEL_QUESTIONS_VOL1 • 2020 • CHEMISTRY • practical

A sample of an unknown metallic element is reacted with excess chlorine gas in a sealed vessel. The metal sample (mass = 1.20 g) is placed in the vessel and chlorine gas is introduced until no further change is observed. After the reaction, the mass of the resulting metal chloride is measured as 2.10 g. The atomic mass of the metal is known to be 24.3 g·mol⁻¹.

Question Parts

( a )

Calculate the mass of chlorine that combined with the metal.

( b )

Determine the number of moles of metal and of chlorine that reacted.

( c )

Using the mole values, deduce the empirical formula of the metal chloride.

( d )

State the type of chemical bond expected in this compound and justify your answer.

( e )

Suggest one probable source of experimental error that could affect the calculated formula.

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About This Question

This is Waec Model Questions Vol1 2020 Chemistry Question 3. It is one of the practical questions from the 2020 Waec Model Questions Vol1 Chemistry examination.

The question covers Chemical Bonding .

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