Question

Q) Two different compounds are formed by
the
elements carbon and oxygen. The first
compound
contains 42.9% by mass carbon and 57.1%
by mass oxygen. The second compound contains
27.3% by mass carbon and 72.7% by
oxygen. Show that the data are consistent
with the law of multiple proportions.​

Answer 1

Answer:

11th

Chemistry

Some Basic Concepts of Chemistry

Law of Chemical Combinations

Carbon and oxygen forms two...

CHEMISTRY

Carbon and oxygen forms two compounds. Carbon content in one of them is 42.9% while in the other is 27.3%. The given data is in support with:

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ANSWER

The above example illustrates the law of multiple proportions:

If carbon constitutes 42.9% then Oxygen constitutes 57.1%(100−42.7)

Then, 1 gram of oxygen constitutes

57.1

42.9

=0.79 gram of carbon.

In the second compound, oxygen constitutes 72.3 gram (100−27.3)

Then 1 gm of oxygen constitutes

7207

27.3

=0.375 gram of carbon.

The ratio of carbon combining in two compounds with a fixed weight of oxygen is 0.79:0.375 is 2:1. (simple ratio)

Answer 2

Given:

The first  compound  contains 42.9% by mass carbon and 57.1%  by mass oxygen

The second compound contains  27.3% by mass carbon and 72.7% by  oxygen.

carbon       oxygen        

42.9%        57.1%

27.3%         72.7%

In the first compound weight of oxygen will combine with weight of carbon.

42.9/57.1=0.751

In the first compound by weight of oxygen will combine with weight of carbon.

27.3/72.7=0.386

The ratio of the weights

0.751:0.386

or 2:1

There is no law of multiple verified.