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CBSE Class 11-science Answered

The oxide of an element possess the molecular formula M2O3. If the equivqlent mass of the metal is 9,the molecular mass of the oxide will be??
Asked by minipkda | 18 Aug, 2018, 08:37: PM
answered-by-expert Expert Answer
Given:
 
Formula of metal oxide =M2O3 
 
Equivalent mass of metal = 9
 
In space compound space straight M subscript 2 straight O subscript 3 space valency space of space metal space straight M space equals space 3 Equivalent space weight space equals fraction numerator space Atomic space weight over denominator Valency end fraction space space Atomic space weight space equals Equivalent space weight cross times Valency space space space space space space space space space space space space space space space space space space space space space space space equals space 9 cross times 3 space Atomic space weight space of space metal equals space 27 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 27 cross times 2 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 54 Atomic space weight space of space oxygen space equals space 16 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 16 cross times 3 space equals 48 Molecular space weight space of space metal space oxide space straight M subscript 2 straight O subscript 3 space equals space 54 plus 48 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 102
The molecular mass of the oxide will be 102.

Answered by Varsha | 20 Aug, 2018, 11:51: AM

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