CBSE Class 10 Science 2017 Delhi Term II Set 1 Paper

Question : 7 of 36

Marks: +1, -0

Two carbon compounds

X

and

Y

have the molecular formula

{\C}_4 {\H}_8

and

{\C}_5 {\H}_{12}

respectively. Which one of these is most likely to show addition reaction ? Justify your answer. Also give the chemical equation to explain the process of addition reaction in this case.

Solution:

{\X}= {\C}_4 {\H}_8

is an alkene.

{\Y}= {\C}_5 {\H}_{12}

is an alkane.

{\X}

being an alkene i.e., butene is unsaturated compound and will show addition reaction as they have free electrons for bonding.

{\CH}_3 {\CH}_2 {\CH}= {\CH}_2+ {\H}_2{───▶}↖{\Pd {/}\Ni} {\CH}_3 {\CH}_2 {\CH}_2 {\CH}_3

{\CH}_3 {\CH}= {\CHCH}_3+ {\Cl}_2 {───▶}↖{h v} {\CH}_3 {\ClCHClCHCH}_3

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