Question

13. Carbon forms two gaseous oxides. One of these oxides contains 42.8% of Carbon while the other contains 27.27% carbon. Explain which law of chemical combination this data illustrates. State this law.​

Answer 1

Answer:

The ratio of oxygen in the two compounds is 1:2 so this compound follows law of multiple proportions. According to this law when two elements combine with each other to form two or more than two compounds, the masses of one of the elements which combine with fixed mass of the other, bear a simple whole number ratio to the other.

Explanation:

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Answer 2

Answer:

the law of multiple proportion

Explanation:

It states that the masses of one element which combine with fixed mass of second element are in a ration of whole number therefore the masses of oxygen in the two compounds that combine with fixed mass of carbon should be in a whole number say 100 gram of first compound contains 42.8% of carbon and 57.2% oxygen.

So, 42.8 gram of carbon and 57.2 gram of oxygen

the mass of oxygen per gram of carbon is 42.8/57.2=1.33 gram O per gram C.

Now, the 100 gram of second compound there are 72.73 gram of O and 27.27 gram of C.

So, the mass of oxygen per gram of carbon is 27.27/72.73  = 2.66  gram O per gram C.

The mass fraction =1.33/2.66 =1:2

The whole number ratio is consistent with the law of multiple proportion.