The amines are basic in nature, hence they form salts with a hydrochloric acid. Which of the following will be insoluble in dil. $H C l$ ?

C_{6} H_{5} N H_{2}

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(C_{6} H_{5})_{3} N

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C_{2} H_{5} N H_{2}

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C H_{3} N H C H_{3}

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Solution

The correct option is B $(C_{6} H_{5})_{3} N$
There is no free hydrogen in tertiary amines hence they do not form salts and are not soluble in acids.

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Convert :
(a) Two soluble metallic nitrates to insoluble metallic chlorides using dil. HCl.
(b) Hydrochloric acid to nascent chlorine.

Arrange the following in increasing order of their basic strength:

(i) C₂H₅NH₂, C₆H₅NH₂, NH₃, C₆H₅CH₂NH₂ and (C₂H₅)₂NH

(ii) C₂H₅NH₂, (C₂H₅)₂NH, (C₂H₅)₃N, C₆H₅NH₂

(iii) CH₃NH₂, (CH₃)₂NH, (CH₃)₃N, C₆H₅NH₂, C₆H₅CH₂NH₂.

C_{2} H_{5} N H_{2}

C_{6} H_{5} N H_{2}

(C_{2} H_{5})_{2} N H

C_{2} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, (C_{2} H_{5})_{3} N, C_{6} H_{5} N H_{2}

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