he correct order in aqueous medium of basic strength in case of methyl substituted amines is:Me2NH>MeNH2>Me3N>NH3Me2NH>Me3N>MeNH2>NH3NH3>Me3N>MeNH2>Me2NHMe3N>Me2NH>MeNH2>NH3
Question
he correct order in aqueous medium of basic strength in case of methyl substituted amines is:Me2NH>MeNH2>Me3N>NH3Me2NH>Me3N>MeNH2>NH3NH3>Me3N>MeNH2>Me2NHMe3N>Me2NH>MeNH2>NH3
Solution
The correct order of basic strength in aqueous medium for methyl substituted amines is: Me3N > Me2NH > MeNH2 > NH3.
Here's why:
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The basic strength of amines in aqueous medium depends on the stabilization of the protonated form of the amine.
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When an amine accepts a proton, it forms a positively charged ammonium ion. The more stable this ion is, the stronger the base.
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Alkyl groups are electron-releasing. They push electron density towards the nitrogen atom, stabilizing the positive charge on the nitrogen when it accepts a proton.
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Therefore, the more alkyl groups are attached to the nitrogen, the more stable the ammonium ion, and the stronger the base.
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So, in aqueous medium, trimethylamine (Me3N) is the strongest base, followed by dimethylamine (Me2NH), then methylamine (MeNH2), and finally ammonia (NH3).
Similar Questions
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an amine each with basic strength greater than and less than N-Methylmethanamine ingaseous state
Which of the following amines is the strongest base?Select answer from the options belowTrimethylaminePyrroleAnilinePyridine
Choose the incorrect statement from the following.In case of primary, secondary and tertiary amines, the basic strength depends on the extent of hydrogen bonding in the protonated amines.The presence of groups like −OCH3 and −CH3 increases the basic strength of amines.The presence of groups like −NO2, CN and halogens reduces the basic strength of amines.The basic strength of amines depends on their concentration.
CH3-CH2-NH-CH3 is a __________Group of answer choicessecondary amineprimary aminequaternary aminetertiary amine
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