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Trimethylamine is less basic than dimeth...

Trimethylamine is less basic than dimethylamine.

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`- NH_2` attached to aromatic ring is highly activating.
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Pyridine is less basic than triethylamine because :

A: Phthalimide is less basic than acetamide. R: Acetamide is more basic than ethyl amine.

Which is less basic than benzyl carbanion ?

The lone pair of amines makes them basic. They react with acids to form acid-base salts. Amines are more basic than alcohols, ethers and water. When an amine is dissolved in water, an equilibrium is established , where water acts as an acid and transfer a proton to the amine. The basic strength of an amine can be measured by basicity constant K_(b) . Arylamines are less basic than alkylamines because the lone pair of nitrogen is delocalised with the aromatic ring and are less available for donation. Substituted arylamines can be either more basic or less basic than aniline , depending on the substituted . ERG substituents, such as -CH_(3), -NH_(2) and -OCH_(3) increases the basicity and EWG substituents , such as -Cl, -NO_(2) and -CN decreases basicity. While sp^(2)- hybridized nitrogen atom in pyridine is less basic then the sp^(3) -hybridized nitrogen in an alkylamine. The most basic carbanion is :

Assertion : Acetanilide is less basic than aniline . Reason : Acetanilide is formed by reaction of aniline with acetic anhydride .

Phenol is less acidic than

Phenol is less acidic than

Phenol is less acidic than

Phenol is less acidic than

The lone pair of amines makes them basic. They react with acids to form acid-base salts. Amines are more basic than alcohols, ethers and water. When an amine is dissolved in water, an equilibrium is established , where water acts as an acid and transfer a proton to the amine. The basic strength of an amine can be measured by basicity constant K_(b) . Arylamines are less basic than alkylamines because the lone pair of nitrogen is delocalised with the aromatic ring and are less available for donation. Substituted arylamines can be either more basic or less basic than aniline , depending on the substituted . ERG substituents, such as -CH_(3), -NH_(2) and -OCH_(3) increases the basicity and EWG substituents , such as -Cl, -NO_(2) and -CN decreases basicity. While sp^(2)- hybridized nitrogen atom in pyridine is less basic then the sp^(3) -hybridized nitrogen in an alkylamine. pK_(b) order of the following compound is : (I) NH_(2)OH" "(II) NH_(2)NH_(2)" "(III) NH_(3)" "(IV)H_(2)O

ICSE-ORGANIC COMPOUNDS CONTAINING NITROGEN-EXERCISE (PART-II DESCRIPTIVE QUESTIONS- LONG ANSWER QUESTIONS )
  1. Account for the following: Amines are basic while amides are neutr...

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  2. Account for the following: Tertiary amines do not undergo acylation ...

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  3. Trimethylamine is less basic than dimethylamine.

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  4. Electrophilic substitution in case of aromatic amines takes place more...

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  5. Account for the following: Alkylamines are stronger bases than aryl...

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  6. Account for the following: Aniline is acylated first to prepare its...

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  7. How is aniline prepared on a large scale ?

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  8. What happens when aniline is heated with a mixture of conc. nitric...

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  9. Electrophilic substitution of aniline with bromine water at room tempe...

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  10. When aniline is heated with conc. H2SO4 at 455-475 K, it forms

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  11. How will you distinguish between primary, secondary and tertiary amine...

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  12. Give three points of distinction between ethylamine and aniline.

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  13. How is aniline diazotised ? Write chemical reactions.

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  14. How will you canvert the following : (i) Nitrobenzene into aniline, ...

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  15. How is m-nitroaniline obtained from nitrobenzene?

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  16. Bring out the following conversions : Aniline to phenyl isocyanide.

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  17. How will you bring about the following conversions ? Ethylamine to...

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  18. How will you bring about the following conversions ? Aniline to br...

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  19. How will you bring about the following conversions ? Aniline to su...

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  20. How will you bring about the following conversions ? Aniline to o-...

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