A hydrogen contain 90% of carbon and 10% hydrogen. The empirical formula of the compound is :-a)C2H5b)C3H2c)C3H4d)C H3Correct answer is option 'C'. Can you explain this answer?

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A hydrogen contain 90% of carbon and 10% hydrogen. The empirical formula of the compound is :-

a)
C₂H₅
b)
C₃H₂
c)
C₃H₄
d)
C H₃

Correct answer is option 'C'. Can you explain this answer?

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Most Upvoted Answer

A hydrogen contain 90% of carbon and 10% hydrogen. The empirical formu...

Given C 90%, H10%.

So Moles of element C = 90/12 =7.5

So Moles of element H = 10/1 =10

Simplest molar ration of carbon= 7.5/7.5=1

Simplest molar ration of H= 10/7.5=1.33

whole no ratio element C= 1*3=3

whole no ratio element H= 1.33*3=4

so its C3H4

Answered by Dr Manju Sen · View profile

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Community Answer

A hydrogen contain 90% of carbon and 10% hydrogen. The empirical formu...

Let us take the mass of compound =100 gm

Moles of carbon =
12
90

=7.5

Moles of hydrogen =
1
10

=10

The ratio of C:H=7.5:10

=3:4

∴ Empirical formula =C
3

H
4

.

Hence, option C is correct.

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