1.

An unknown compound A has a molecular formula C_4H_6.When A is treated with an excess of Br_2 a new substance B with formula C_4H_6Br_4 is formed. A forms a white precipitate with ammoniacal silver nitrate solution. A may be

Answer»

Butyne-1
Butyne-2
Butene-1
Butene-2

Solution :`underset"1-Butyne"(CH_3-CH_2-C)-=CH+2Br_2 to CH_3-CH_2 - undersetunderset(Br)(|)oversetoverset(Br)(|)C-undersetunderset(Br)(|)oversetoverset(Br)(|)C-H`
Since the molecule TAKES 2 moles of `Br_2`. THEREFORE it is alkyne. Also it gives WHITE ppt with Tollen's REAGENT therefore acidic H is PRESENT . Hence it is 1-Butyne


Discussion

No Comment Found

Related InterviewSolutions