Question

differentiate between alkanes and alkenes. name and draw the structure of one member of each.​

Answer 1

Alkanes :-

(i) Hydrocarbons in which Carbon atoms contain a single bond. (i.e. C-C bond)

(ii) They are saturated Hydrocarbons since there's a single bond.

(iii) The general formula for Alkanes is CnH2n+2 (where n = no. of Carbon atoms).

Alkenes :-

(i) Hydrocarbons in which Carbon atoms contain a double bond.

(ii) They are unsaturated Hydrocarbons since there's a double bond between the Carbon atoms.

(iii) The general formula for alkenes is CnH2n.

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Example :-

Alkane -

Methane (First member of alkane series)

(i) It contains a single Carbon atom satisfying it's valency with four Hydrogen atoms.

Alkene -

Ethene (First member of alkene series)

(i) It contains two Carbon atoms connected with a double bond, with valency of Carbon being satisfied by Hydrogen atoms.

(Refer to attachment for their structures)

Answer 2

Answer:

Alkanes :-

(i) Hydrocarbons in which Carbon atoms contain a single bond. (i.e. C-C bond)

(ii) They are saturated Hydrocarbons since there's a single bond.

(iii) The general formula for Alkanes is CnH2n+2 (where n = no. of Carbon atoms).

Alkenes :-

(i) Hydrocarbons in which Carbon atoms contain a double bond.

(ii) They are unsaturated Hydrocarbons since there's a double bond between the Carbon atoms.

(iii) The general formula for alkenes is CnH2n.

_____________________________

Example :-

Alkane -

Methane (First member of alkane series)

(i) It contains a single Carbon atom satisfying it's valency with four Hydrogen atoms.

Alkene -

Ethene (First member of alkene series)

(i) It contains two Carbon atoms connected with a double bond, with valency of Carbon being satisfied by Hydrogen atoms.

(Refer to attachment for their structures)