Question

a) What is a homologous series?

b) State two characteristic of carbon which when put together give rise to large number of

Carbon Compound.

c) Write the molecular formula of ethane and draw its electron dot structure.​

Answer 1

Answer:

1. In organic chemistry, a homologous series is a sequence of compounds with the same functional group and similar chemical properties in which the members of the series can be branched or unbranched, or differ by -CH2.
2. The two features of carbon that give rise to a large number of compounds are as follows: (i) Catenation − It is the ability to form bonds with other atoms of carbon. (ii) Tetravalency − With the valency of four, carbon is capable of bonding with four other atoms.

3. Ethane: The molecular formula is C2H6. Ethyne: The molecular formula is C2H2.

Explanation:

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Answer 2

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Ans.a) A homologous series is a family of hydrocarbons with similar chemical properties who share the same general formula. We will look at three hydrocarbon series: alkanes, alkenes and the cycloalkanes.

Ans.b) The two features of carbon that give rise to a large number of compounds are as follows:

(i) Catenation - It is the ability to form bonds with other atoms of carbon.

(ii) Tetravalency - With the valency of four, carbon is capable of bonding with four other atoms.

Ans.c) Ethane: The molecular formula is C2H6.

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