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Distinguishing Test of Terminal and Non Terminal Alkynes

Which will un...

Question

Which will undergo reaction with ammonical $A g N O_{3}$ ?

A

C H_{3} - C H_{2} - C H_{2} - C H = C H - C H_{3}

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B

C H_{3} - C H = C H - C \equiv C H

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C

C H_{3} - C H_{2} - C H = C H - C H_{2} - C H_{3}

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D

C H_{2} = C H - C H_{2} - C H_{3}

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Solution

The correct option is B $C H_{3} - C H = C H - C \equiv C H$
$C H_{3} - C H = C H - C \equiv C - H$ contains acidic hydrogen (H atom attached to triple bond). as this is terminal alkyne so, this reacts with ammoniacal solutions of silver nitrate and cuprous chloride. Hence, the correct answer is option (b).

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Similar questions

Q. The correct order of C - H bond length in

C H_{3} - C H_{3}, C H_{2} = C H_{2}

C H \equiv C H

Q. Which amongst the following is a positional isomer of

{CH}_{3} - {CH}_{2} - CH = {CH}_{3}

Q. Find out the order of stability between

(A) C H_{3} - C H_{2} - C | C O O H H - - C H - C H_{3}

(B) C H_{3} - C | C O O H H - C H_{2} - - C H - C H_{3}

(C) C | C O O H H_{2} - C H_{2} - C H_{2} - - C H - C H_{3}

Q. Pick out the correct reactions:

A . C H_{3} - C H = C H_{2} + H C l ⟶ C H_{3} - C | C l H - C H_{3}

B . C H_{3} - C H = C H_{2} + H B r ⟶ C H_{3} - C H_{2} - C H_{2} B r

C . C H_{3} - C H = C H_{2} + H B r p e r o x i d e - ---- \to C H_{3} - C H_{2} - C H_{2} - B r

D . C H_{3} - C H = C H_{2} + H I p e r o x i d e - ---- \to C H_{3} - C | I H - C H_{3}

Q. Which of the following reaction is example of

S_{N} 2

c o n c . H C l :

(a) C H_{3} - C H_{2} - O H A n h y Z n C l_{2} / △ - -------- \to C H_{3} - C H_{2} - C l

(b) C H_{3} - C H_{3} | C | C H_{3} - C H_{2} O H A n h y Z n C l_{2} / △ - -------- \to C H_{3} - C H_{1} | C | C H_{3} - C H_{2} - C H_{3}

(c) C H_{3} - O H | C | C H_{3} - C H_{3} A n h y Z n C l_{2} / △ - -------- \to C H_{3} - C l | C | C H_{3} - C H_{3}

(d) C H_{2} = C H - C H_{2} - O H A n h y Z n C l_{2} / △ - -------- \to C H_{2} = C H - C H_{2} - C l

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Distinguishing Test of Terminal and Non Terminal Alkynes

Standard XII Chemistry

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