Advertisements
Advertisements
Question
Account for the following:
Ethylamine is soluble in water, whereas aniline is not.
Advertisements
Solution
Ethylamine is soluble in water, due to hydrogen bonding as shown below:
\[\begin{array}{cc}
\ce{H}\phantom{..........................}\ce{H}\phantom{.................}\\
|\phantom{...........................}|\phantom{.................}\\
\ce{{- - - - - -} N-H {- - - - - -} O-H {- - - - - -} N-H {- - - - - -} O-H {- - - - - -}}\\
\phantom{..........}|\phantom{.............}|\phantom{..............}|\phantom{.............}|\phantom{.............}\\
\ce{\underset{Ethylamine}{C2H5}}\phantom{.......}\ce{H}\phantom{.............}\ce{C2H5}\phantom{.........}\ce{H}\phantom{.....}
\end{array}\]
On the other hand, aniline has a large phenyl group and has -I effect due to which the hydrogen bonding with water is reduced. Hence, aniline is insoluble in water.
APPEARS IN
RELATED QUESTIONS
Which among the following molecular formulae represents urotropine?
(a) C6H12N4
(b) C6H24H4
(c) C6H12N4O2
(d) C6H24N4O2
Convert aniline into 1, 3, 5-tribromobenzene.
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
CH3(CH2)2NH2
Give one chemical test to distinguish between the following pair of compounds.
Ethylamine and aniline
Account for the following:
pKb of aniline is more than that of methylamine.
How will you convert ethanoic acid into propanoic acid?
How will you convert methanamine into ethanamine?
Accomplish the following conversion:
Benzoic acid to aniline
An aromatic compound ‘A’ on treatment with aqueous ammonia and heating forms compound ‘B’ which on heating with Br2 and KOH forms a compound ‘C’ of molecular formula C6H7N. Write the structures and IUPAC names of compounds A, B and C.
Complete the following reaction:
\[\ce{C6H5N2Cl + C2H5OH ->}\]
Give reasons Although –NH2 is o/p directing group, yet aniline on nitration gives a significant amount of m-nitroaniline
Do the following conversions in not more than two steps :
Propanone to Propene
Write the structure of 2,4-dinitrochlorobenzene
How are ethylamine and ethyl methyl amine distinguished by using nitrous acid?
Write the IUPAC name of the given compound :
Give simple chemical tests to distinguish between the following pair of compounds:
Benzaldehyde and Benzoic acid
An organic compound (A) with molecular formula C3H7NO on heating with Br2 and KOH forms a compound (B). Compound (B) on heating with CHCl3 and alcoholic KOH produces a foul-smelling compound (C) and on reacting with C6H5SO2Cl forms a compound (D) which is soluble in alkali. Write the structure of (A), (B), (C) and (D).
Do the following conversions in not more than two steps:
\[\begin{array}{cc}
\ce{CH3CN to CH3 - C - CH3}\\
\phantom{...........}||\\
\phantom{...........}\ce{O}
\end{array}\]
