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2 years ago

The overall equation for the electrolysis of aluminium oxide is:

Chemistry

1 answer:

Alex Ar [27]2 years ago

6 0

941539.2 g of mass of oxygen is produced when 2000 kg of aluminium oxide is completely electrolysed.

<h3>What is electrolysis?</h3>

Electrolysis is the process by which electric current is passed through a substance to effect a chemical change.

The mass of aluminium oxide Al₂O₃ = 2000 kg = 2000 000 g

Molar mass of Al₂O₃ = 101.96 g/mol

no of moles = $\frac{mass }{ molar \;mass}$

no of moles of Al₂O₃ = $\frac{2000 000 g}{101.96 g/mol}$

no of moles of Al₂O₃ = 19615.4 mol

From the reaction:

4Al + 3O₂ ⇒ Al₂O₃

To determine the moles of O₂ in Al₂O₃:

Then;

19615.4 mol X $\frac{3}{2}$ mol of O₂ = 29423.1

The mass of oxygen now = 29423.1 × 32 g

= 941539.2 g

Hence, 941539.2 g of mass of oxygen is produced when 2000 kg of aluminium oxide is completely electrolysed.

Learn more about electrolysis here:

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<u>Explanation:</u>

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Putting values in above equation, we get:

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