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Order of basicity of amines is...

Order of basicity of amines is

A

ter `gt` sec `gt` pri

B

pri `gt ` sec `gt` ter

C

sec `gt` pri `gt` ter

D

ter `gt` pri `gt` sec

Text Solution

Verified by Experts

The correct Answer is:
C
The order of basic character depends on + I effect of alkyl group attached to nitrogen in amine .
Tirtiary amines are less basic than secondary amine due to stearic hindrance.
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The correct order of basicity of amines in water is:

The order of basicity of amines in gaseous state is-

Greater is the stability of the substituted ammonium cation, stronger should be the corresponding amine as a base. Thus, the order of basicity of aliphatic amines should be: primary > secondary > tertiary, which is opposite to the inductive effect based order. Secondly, when the alkyl group is small, like- CH_3 group, there is no steric hindrance to H-bonding. In case the alkyl group is bigger than CH_3 group, there will be steric hinderance to H-bonding. Therefore, the change of nature of the alkyl group, e.g.,from- CH_3 to- C_2 H_5 results in change of the order of basic strength. In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices. Assertion (A): Greater is the stability of the substituted ammonium cation, stronger is the corresponding amine as a base. Reason (R): The order of basicity of aliphatic amines is: primary > secondary > tertiary.

The correct order of basicity of the following amines , , , is

MARVEL PUBLICATION-ORGANIC COMPOUNDS CONTAINGING NITROGEN -TEST YOUR GRASP
  1. Order of basicity of amines is

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  2. IUPAC name of ethyl amine is

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  3. Acetaldoxime on reduction by Na and alcohol produces

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  4. (CH(3))(3) N is

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  5. Ethyl amine reacts with which of the following to give ethyl am...

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  6. Trimethyl amine is less basic than methyl amine because

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  7. n-butyl amine and isobuty amine are

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  8. The true statement about ethylamine is

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  9. The reaction which is given only by primary amines is

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  10. A amine produces yellow oily compound on reaction with nitrous ...

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  11. Which of the following produces diacetyl derivative on reaction w...

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  12. According to Lewis concept R- NH(2)

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  13. Which of the following is quarternary ammonium salt ?

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  14. Methylation of methyl amine gives 1^(st) product as

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  15. Which of the following is absorbed by dilute HCI ?

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  16. Which of the following produces HNO(2) acid ?

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  17. The amine which reacts with NaNO2 and dil. HCl to give yellow oily com...

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  18. Ethyl bromide reacts with excess of alcoholic ammonia the majo...

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  19. When ethylamine is heated with excess of acetic anhydride it giv...

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  20. Dimethanamine is the IUPAC name of

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  21. Methyl amine is obtained by reduction of nitromethane by using w...

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