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Snezhnost [94]
3 years ago
13

When hydrogen is burned in oxygen to form water, the composition of water formed does not depend on the amount of oxygen reacted

. interpret this in terms of the law of definite proportion?
Chemistry
2 answers:
VLD [36.1K]3 years ago
4 0
Law of Definite Proportions states that a compound is composed of the same ratio of elements present. The formation of water has a reaction:

H2 + 1/2 O2 = H2O

The limiting reactant would be the element with the least ratio of molar mass to stoichiometric coefficient, and that would be H2, not O2.
Vedmedyk [2.9K]3 years ago
4 0

Answer:  

Explanation:  Law of Definite Proportions state that in a chemical compound, the constituent element will always exist in a fixed ratio which does not depend on the source of preparation.

So when hydrogen is burned in oxygen to form water, the composition of water formed does not depend on the oxygen but it depends on the hydrogen itself.

H_{2}O + 1/2 O_{2} \rightarrow H_{2}O

Thus the reaction usually depends on the limiting reagent ad hence , in the above reaction, hydrogen is the limiting reagent. Thus the reaction will depend on the hydrogen, not on oxygen.

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