Question

How does the law of definite proportions apply to compounds?

Answer 1

Giving to this law , every chemical compound holds a specific fixed and constant proportions (by mass) of its essential elements in the reaction.
This law statuses that a compound always comprises exactly the equal proportion of elements by mass.

Complete step by step answer:
This law of definite proportions is from time to time talked about as Proust's Law for the reason that it was in the beginning perceived by a French chemist named Joseph Proust. In the new world, this law appears obvious, but then again in Proust's day it was a new indication, because specific scientists thought that several combinations of elements could make convinced substances, instead of the substance requiring to be produced by a definite proportion.
This resource shows that the composition of a compound is not determined by its source or its process of research.
In water, e.g., the mass of O must continually have the equal ratio to the mass of H (mass ratio is $\;O:H{\text{ }} = {\text{ }}7.94:1$).
To tell uncertainty compounds containing the similar elements are the similar or different, we can define the proportions of their masses.
EXAMPLE-
Compound $\;1$ comprises $15.0{\text{ }}g$ of $\;H$ and $120.0{\text{ }}g$ of $O$. Compound $2$ comprises $2.00{\text{ }}g$ of $\;H$ and $32.0g$ of $O$. Are the compounds similar or different?
Solution-
Compound $\;1$: Mass ratio of $O:H = 120.0g:{\text{ }}15.0g = 8.00$
Compound $2$: Mass ratio of $O:H = 32.0g\;:{\text{ }}2.00g = 16.0$
The mass ratios are not the same. The compounds are dissimilar.

Note:
-This law of extents is a law of science that pronounces that a synthetic compound is ceaselessly imagined of the specific indistinguishable extent of components by mass. Along these lines, if a compound is made by joining $1/4$ from one chemical and the leftover $3/4$ from one more chemical, these proportions will continually hold true, irrespective of the amount of chemicals additional.
-Vinegar is an alternative common home item. Its chemical compound is ${C_2}{H_4}{O_2}$, implication that it is through of $2$ atoms of $C$, $4$ atoms of $\;H$, $2$ atoms of $O$. No other grouping of C, $\;H$, and $O$ could be combined to produce vinegar.
-The Law of Proportions confirms that chemical compounds are at all times created using the equal proportions, irrespective of the quantity of the compound which is being made.