A hydrocarbon contains 20% hydrogen by mass, the empirical formula of hydrocarbon is:

C H

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C H_{2}

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C H_{3}

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C H_{4}

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Solution

The correct option is C $C H_{3}$
Hydrocarbon contains only carbon and hydrogen.

Ratio of number of atoms of $H$ and $C$ is $\frac{20}{1} : \frac{80}{12}$ = $3 : 1$

So, the empirical formula becomes $C H_{3}$ .

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Similar questions

Q. A hydrocarbon contains 20% hydrogen by mass. The empirical formula of the compound is:

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, the empirical formula of hydrocarbon is :

Q. A hydrocarbon has an empirical formula of

C H

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. What is the molecular formula of this compound?

A straight chain hydrocarbon has the molecular formula C8H10. The hybridisation for the carbon atoms from one end of the chain to the other are respectively $s p^{3}, s p^{2}, s p^{2}, s p^{3}, s p^{2}, s p^{2}, s p$ and $s p$ . The structural formula of the hydrocarbon would be

Q. A probable molecular formula for a hydrocarbon with empirical formula

C H_{3}

is :

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A hydrocarbon contains 20% hydrogen by mass, the empirical formula of hydrocarbon is:

The correct option is C CH3Hydrocarbon contains only carbon and hydrogen.Ratio of number of atoms of H and C is 201:8012 = 3:1So, the empirical formula becomes CH3.

The correct option is C $C H_{3}$
Hydrocarbon contains only carbon and hydrogen.

Ratio of number of atoms of $H$ and $C$ is $\frac{20}{1} : \frac{80}{12}$ = $3 : 1$

So, the empirical formula becomes $C H_{3}$ .