1.

Among the three isomeric alkanes (C_(5)H_(12)), identify the one that on chlorination yields (a) Four isomeric monochlorides, (b) Three isomeric monochlorides, (c ) A single monochloride

Answer»

Solution :(a) `CH_(3) - underset(underset(CH_(3))(|))(CH)-CH_(2)-CH_(3)`
In methylbutane, there are FOUR DIFFERENT carbon atoms and hence four different hydrogen atoms. Thus, four isomeric products are possible.
(b) `CH_(3)-CH_(2)-CH_(2)-CH_(2)-CH_(3)` In pentane, there are three different carbon atoms and hence three different hydrogen atoms. Then, three isomeric products are possible.
(c ) `H_(3)C- underset(underset(CH_(3))(|))overset(overset(CH_(3))(|))(C )-CH_(3)`
In dimethylpropane, all the hydrogen atoms are equivalent. Hence only ONE isomeric products is possible


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