A compound prepared by any method contains the same elements in the fi...
Law of Definite Proportions
The discovery that mass was always conserved in chemical reactions was soon followed by the law of definite proportions, which states that a given chemical compound always contains the same elements in the exact same proportions by mass. As an example, any sample of pure water contains 11.19.19% hydrogen and 88.81�.81% oxygen by mass. It does not matter where the sample of water came from or how it was prepared. Its composition, like that of every other compound, is fixed.
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A compound prepared by any method contains the same elements in the fi...
Law of Definite Proportions
The Law of Definite Proportions, also known as the Law of Constant Composition, states that a compound always contains the same elements in the fixed ratio by mass. This means that the relative proportions of the elements in a compound are always the same, regardless of the method used to prepare the compound.
Explanation
The Law of Definite Proportions is based on the idea that elements combine to form compounds in fixed proportions. For example, water is always made up of hydrogen and oxygen in a 2:1 ratio by mass. This means that for every two grams of hydrogen in a sample of water, there will be one gram of oxygen.
This law was first proposed by the French chemist Joseph Louis Proust in the late 18th century. Proust conducted a series of experiments in which he analyzed different compounds and found that the relative proportions of their constituent elements were always the same.
The Law of Definite Proportions has important implications for chemistry. It allows chemists to determine the composition of compounds and to predict the properties of compounds based on their composition. It also provides a basis for stoichiometry, which is the study of the quantitative relationships between reactants and products in chemical reactions.
Conclusion
In summary, the Law of Definite Proportions states that a compound always contains the same elements in the fixed ratio by mass. This law is fundamental to the study of chemistry and has important implications for the analysis and prediction of chemical reactions.
A compound prepared by any method contains the same elements in the fi...
Answer is A........ as law given by a french chemist joseph proust in 1799. This law states that s chemical compound always contains exactly the same proportion of elements by mass
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