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Homologous Series

Which general...

Question

Which general formula represents the homologous series of hydrocarbons that includes the compound 1-heptyne?

A

C_{n} H_{2 n - 6}

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B

C_{n} H_{2 n}

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C

C_{n} H_{2 n - 2}

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D

C_{n} H_{2 n + 2}

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Solution

The correct option is B $C_{n} H_{2 n - 2}$
1-heptyne is alkyne. The general formula for alkyne is $C_{n} H_{2 n - 2}$ .

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Q. (a) Give the general name of the class of compounds having the general formula C_nH_2n₋₂. Write name of the first member of this homologous series.
(b) The general formula of a homologous series of carbon compounds if C_nH_2n. Write the molecular formulae of the second and fourth members of the series.
(c) Write the molecular formulae of the third and fifth members of homologous series of carbon compounds represented by the general formula C_nH_2n₊₂

Q. Which of the following pairs of homologous series is represented by the general molecular formula

C_{n} H_{2 n - 2}

Q. Fill in the blanks by choosing words from the given list of words:
addition, carbohydrates, C_nH_2n−2, C_nH_2n_{+ 2}, electrochemical, homologous, hydrocarbons, saturated, substitution, unsaturated.
The alkanes form a ....... series with the general formula .......... The alkanes are .........., which generally undergo ........... reactions.

Q. An homologue of homologous series with general formula

C_{n} H_{2 n}

Q. Write the molecular formulae of the third and fifth members of homologous series represented by the general formula C_nH_2n₋₂.

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