Four gases ethane, ethene, ethyne and propene are passed into a wolf bottle containing ammoniacal AgNO 3 solution. Which gas will come out of wolf bottle?

Question

Four gases ethane, ethene, ethyne and propene are passed into a wolf bottle containing ammoniacal AgNO 3 solution. Which gas will come out of wolf bottle? (A) Only ethyne (B) Ethane and ethyne (C) Ethane and ethene (D) Ethane, ethene and propene

Tardigrade Admin · Accepted Answer

Terminal alkynes are precipitated in form of acetylides when they react with

A g N O_{3}

.
Alkane and alkene do not react with

A g N O_{3}

.
(i)

ethane C_{2} H_{6} + A g N O_{3} \to

No reactioin
(ii)

ethane C_{2} H_{4} + A g N O_{3} \to

No reactioin
(iii)

p ro p e n e C_{3} H_{6} + A g N O_{3} \to

No reactioin
(iv)

ethyne H C \equiv C H + A g N O_{3} \to A white ppt. of silver acetylide A g - C \equiv C - A g

Ethane, ethene and propene do not react with

A g N O_{3}

.

∴

They come out of wolf bottle.

Q. Four gases ethane, ethene, ethyne and propene are passed into a wolf bottle containing ammoniacal AgNO3​ solution. Which gas will come out of wolf bottle?

Only ethyne

Ethane and ethyne

Ethane and ethene

Ethane, ethene and propene

Q. Four gases ethane, ethene, ethyne and propene are passed into a wolf bottle containing ammoniacal $A g N O_{3}$ solution. Which gas will come out of wolf bottle?