Alkanes are families of homologous with general formula $C_{n} H_{2 n + 2}$ . Identify the correct option(s).

The % by mass of carbon is maximum for

C H_{4}

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The % by mass of carbon is minimum for

C H_{4}

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For heavier homologous, the % of carbon by mass is higher.

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For heavier homologous, the % of carbon by mass is smaller.

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Solution

The correct options are
B The % by mass of carbon is minimum for $C H_{4}$ .
D For heavier homologous, the % of carbon by mass is higher.
The percentage of carbon by mass in methane and ethane are 75% and 85% respectively.
The percentage by mass of carbon is minimum for $C H_{4}$ . Hence, the option A is incorrect and the option B is correct.
For heavier homologous, the percentage of carbon by mass is higher.. Hence, the option C is correct and D is incorrect.

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Similar questions

(a) Give the general name of the class of compounds having the general formula $C_{n} H_{2 n - 2} .$ Write the name of the first member of this homologous series.
(b) The general formula of a homologous series of carbon compounds is $C_{n} H_{2 n} .$ 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 $C_{n} H_{2 n + 2}$

Q. Assertion :The ability of carbon to form chains gives rise to a homologous series of compounds. Reason: Homologous series is a series of compounds with the same general formula, usually varying by a single parameter such as the length of a carbon chain

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. (a) Define a homologous series. Give the name and structural formula of one homologue of the following:
CH₃OH
(b) Write the molecular formula of the third member of the homologous series of carbon compounds with general formula C_nH₂_n₊₁OH.
(c) Name any two fossil fuels.

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

C_{n} H_{2 n - 2}

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Alkanes are families of homologous with general formula CnH2n+2. Identify the correct option(s).

Alkanes are families of homologous with general formula $C_{n} H_{2 n + 2}$ . Identify the correct option(s).