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CBSE Class 9 Answered

27g of AL will react completely with how many grams of oxygen ?
Asked by kunal | 29 Oct, 2013, 04:24: AM
answered-by-expert Expert Answer

The balanced equation for the given reaction is:

4 Al           +          3 O2    -------->           2 Al2O3

Atomic mass of Al = 27g

Atomic mass of O2 = 2 × 16 = 32g

Mole ratio of aluminium and oxygen can be given as:

Al    :  O2

4     :   3

1    :  3/4

Mass of O2 required = 3/4 × 32 =24g

Answered by Hanisha Vyas | 30 Oct, 2013, 06:39: PM

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