MolSynapsequestion bank

MolSynapse / Question bank / Qualitative Analysis: Anions / Dilute acid group anions: carbonate, sulphite, sulphide, nitrite

NEET levelSingle correct optionDifficulty 1 of 3qa020

A gas evolved on adding dilute $H X_{2} SO X_{4}$ to a salt has a rotten-egg smell and turns filter paper moistened with lead acetate black. The anion present is

A $SO X_{3} X^{2 -}$
B $CO X_{3} X^{2 -}$
C $S X^{2 -}$
D $CH X_{3} COO X^{-}$

Answer: C

Sulphide gives

H X_{2} S

, and

H X_{2} S + Pb (CH X_{3} COO) X_{2} PbS + 2 CH X_{3} COOH

forms black PbS. Sulphite gives

SO X_{2}

, acetate gives vinegar smell and carbonate gives

CO X_{2}

.

Practice Qualitative Analysis: Anions More on Dilute acid group anions: carbonate, sulphite, sulphide, nitrite

Previous questionNext question

More questions on Dilute acid group anions: carbonate, sulphite, sulphide, nitrite