Question

An unsaturated hydrocarbon having a triple covalent bond has 40 Hydrogen atoms in its molecule. The number of carbon atoms in its molecule would be:

20
21
22
19​

Answer 1

Answer:

21

Explanation:

Given: number of Hydrogen atoms=40

triple bond - alkynes

Formula: Cn H(2n-2)

Equate the hydrogen atoms,

2n-2=40

2n=42

n=21

So, the number of Carbon atoms n=21

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