Theneutralizationequivalentof an acidis 116. Fusionof sodim salt of theacidwithsodalime givesa hydrocarbon of whichbutanemonobromo substitutionproductis possible .Whatstructural formulamay beassigned to theacid ?

Theneutralizationequivalentof an acidis 116. Fusionof sodim salt of th

1.	Theneutralizationequivalentof an acidis 116. Fusionof sodim salt of theacidwithsodalime givesa hydrocarbon of whichbutanemonobromo substitutionproductis possible .Whatstructural formulamay beassigned to theacid ?
Answer» Solution :The final product is an alkane derviative , thisindicatesthe acidis mono carboxylic, RCOOH. As neutralequivalentis 116,therefore, formula weightof alky group R is 116-45 (Formulaweight of - COOH) = 71. Thiscorrespecondsot the pentyl group`(C_(5)H_(11))`. The FORMATIONOF butanederivativesuggestsa branched akyl radical containingfour carbon atomsin thelargestchain. Therefore , R shouldbe . `CH_3 - CH_2 - underset(CH_(3))underset(\|)(C)H- CH_(2)` `CH_(3)- CH_(2) - underset(CH_(3))underset(\|)(C)H- underset("( 3 - methyl pentanoic acid)")(CH_(2) - COOH)`