An unsaturated hydrocarbon ' X ' gives white precipitate with Tollen's reagent. If X is gaseous in nature, the molecular formula of X is

Question

Quantrex Academy · Accepted Answer

Correct answer: C. C _ 2 H _ 2

Tollen's reagent consists of a solution of silver nitrate and ammonia.

Terminal alkynes react with tollen's reagent and form white color precipitate.

With Tollen's reagent (ammoniacal ${AgNO}_{3}$ ), a white precipitate of silver salt is obtained.

$H - C ≡ C - H + 2{AgNO}_{3} + 2{NH}_{4}OH \to \mathop{Ag - C ≡ C - Ag}_{Sliveracetylide ( whiteppt. )} + 2{NH}_{4}{NO}_{3} + {H}_{2}O$

An unsaturated hydrocarbon ' X ' gives white precipitate with...