Qualitative Analysis - Result Question 1
####1. An organic compound $X$ showing the following solubility profile is
(2019 Main, 8 April I)
(a) $o$-toluidine
(b) oleic acid
(c) $m$-cresol
(d) benzamide
Show Answer
Solution:
- $m$-cresol is the organic compound that shows the following solubility profile.
$m$-cresol on reaction with $10 % NaOH$ forms 3-methyl sodiumphenoxide ion.
It does not react with $H _2 O, 5 % HCl$ and $10 % NaHCO _3$. Oleic acid $\left(C _{18} H _{34} O _2\right)$ is soluble in $10 % NaOH$ and $10 %$ $NaHCO _3$ due to the presence of $COOH$ group. Benzamide $\left(C _6 H _5 CNH _2\right)$ is insoluble in $5 % HCl, 10 % NaOH$ and $10 % NaHCO _3$ due to the presence $-CONH _2$ group. o-toluidine is soluble in $5 %$. $HCl$ due to presence of basic group $\left(-NH _2\right)$ attached to ring.
