Question

If 3/2 moles of oxygen combine with Al to formAl2O3,the weight of Al used in the reaction is

Answer 1

the weight of Al is 54 g per mile of Al2o3

Answer 2

Answer:

Explanation:

Reaction as under:

4Al + 3O2 → 2Al2O3

So stoichiometric coefficient of Al =4 and O2=3

No of moles of Al/4 =no of moles of oxygen/3

No of moles of aluminium= 3/2÷3×4

Therefore, no of moles of aluminium = 2

Mass of aluminium= 2× 27= 54

Hope this helps!

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