What is the ratio of masses of oxygen that combine with a fixed mass of Hydrogen in water and Hydrogen Peroxide?
1 : 2
2 : 1
2 : 3
3 : 2
As we learnt
Law of multiple proportion -
If two elements can combine to form more than one compund, the masses of one element that combines with a fixed mass of other element are in ratio of small whole numbers.
- wherein
masses of oxygen combining with a fixed mass of hydrogen have ratio 16:32 => 1:2
One mole of water has 2g hydrogen & 16g oxygen.
Similarly, one mole of hydrogen peroxide has 2g of hydrogen and 32 g of oxygen
the ratio =
Option 1)
1 : 2
Correct
Option 2)
2 : 1
Incorrect
Option 3)
2 : 3
Incorrect
Option 4)
3 : 2
Incorrect
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