How much alumina is formed if 4.2*mol of aluminum is oxidized?

1 Answer
anor277
May 12, 2017

Why, 2.1*mol....................

Explanation:

2Al(s) +3/2O_2(g) rarr Al_2O_3(s)

Look at the stoichiometry of the oxide: ONE mole of alumina contains 2 moles of aluminum, and 3 moles of oxygen ATOMS. We have 4.2*mol of aluminum, burnt in excess oxygen, and thus 2.1*mol alumina result.

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