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Branching of Compounds

What is the c...

Question

What is the count of carbons in a alkane chain having 20 hydrogen atoms.

A

10

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B

9

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C

8

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D

12

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Solution

The correct option is B
9

The general formula of a non-cyclic Alkane is $C_{n} H_{2 n + 2}$ . Hence for an alkane of 20 hydrogen atoms, $2 n + 2 = 20$

Number of carbon atoms= $\frac{(20 - 2)}{2}$

Number of carbon atoms=9.

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