If 1 2 moles of oxygen combined with aluminium

Asked by admin @ 16/08/2021 in Chemistry viewed by 271 People

If 1/2 moles of oxygen combine with Aluminimumto form Al2O3, then weight of Aluminium metal usedin the reaction is (Al=27) -

Answered by admin @ 16/08/2021

Answer:

18g

Explanation:

Balanced reaction is

4Al+3O2=2Al2O3

3moles of oxygen oxidizes 4 moles of Al

1/2mole of oxygen oxidizes 4/6=2/3 moles of Al

1 mole of Al weighs 27g

2/3moles of Al weighs 2/3×27=18g

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