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Empirical & Molecular Formula

In a group of...

Question

In a group of hydrocarbons, the ratio between the carbon and hydrogen atoms is $1 : 2$ . These hydrocarbons belong to which class?

A

Alkanes

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B

Alkenes

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C

Alkynes

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D

Aromatic hydrocarbons

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Solution

The correct option is B Alkenes
In a group of hydrocarbons, the ratio between the carbon and hydrogen atoms is 1:2. These hydrocarbons belong Alkenes having general formula $C_{n} H_{2 n}$ . For example ethylene $C H_{2} = C H_{2}$ with general formula $C_{2} H_{4}$

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