What's The Law Of Definite Proportions?


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amber Jhon answered
Law of definite proportion states that a chemical compound always contains a fixed proportion of elements by mass. For example water molecule has two hydrogen atom and one oxygen atom. The ratio between hydrogen and oxygen will always remain 2:1 and it will never change. If we change the ratio of hydrogen and oxygen by 3:1, then hydronium ion is obtain and we cannot consider it as water molecule. The proportion between carbon and oxygen in carbon dioxide is always 1:2 and in carbon mono oxide is 1:1.

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