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Among the isomeric alkanes of molecular formula C_(5)H_(12), identify the one that on photo chemical chlorination yields (i) a single monochloride. (ii) three isomeric monochlorides.(iii) four isomeric monochlorides. |
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Answer» SOLUTION :(i) `underset("Neopentane (gives single monochloride )") (CH_(3)- underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3))` All the H atoms are equivalent. Therefore, replacement of anyone of them will give the same product on PHOTOCHEMICAL chlorination. (II) `underset("n-Pentane")(overset(a)CH_(3)overset(b)CH_(2)overset(c)CH_(2)overset(b)CH_(2)overset(a)CH_(3))` (gives three isoeric monochlorides ) There are three sets of equivalent hydrogens designated as a, b and c. The replacement of any one of the equivalent hydrogens of cach sct will give the same product. Therefore, three ISOMERIC monochlorides are possible. (iii) `overset(a)CH_(3) -underset(overset(a)CH_(3))underset(|)overset(b)CH - overset(c)CH_(2) - overset(d)CH_(3)` (gives FOUR isomeric monochlorides ) There are four types of equivalent hydrogens designated as a, b, c and d. Therefore, four isomeric monochlorides are possible on photochemical chlorination. |
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