Q45 of 60 Page 33

Write the structural formulae of all the isomers of hexane.

There are 5 isomers of hexane. They are hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, and 2,3-dimethylbutane. They are known as constitutional isomers because they each contain exactly the same number and type of atoms. In this case, six carbons and 14 hydrogens and no other atoms.



More from this chapter

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43

Unsaturated hydrocarbons contain multiple bonds between the two C atoms and show addition reactions. Give the test to distinguish ethane from ethene.

 44

Match the reactions given in Column (A) with the names given in column (B).

Column (A)


(a)


(b)


(c)


(d)


Column (B)


(i) Addition reaction


(ii) Substitution reaction


(iii) Neutralization reaction


(iv) Esterification reaction

 46

What is the role of metal or reagents written on arrows in the given chemical reactions?

 47

A salt X is formed and a gas is evolved when ethanoic acid reacts with sodium hydrogen carbonate. Name the salt X and the gas evolved. Describe an activity and draw the diagram of the apparatus to prove that the evolved gas is the one which you have named. Also, write chemical equation of the reaction involved.