Solveeit Logo
Login

Question

Question: Irritating smell [Y] + K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> + H<sub>2</sub>SO<sub>4</sub>® gree...

Irritating smell

[Y] + K2Cr2O7 + H2SO4® green solution

[X] and [Y] are, respectively -

A

SO32−,SO2SO_{3}^{2 -},SO_{2}

B

Cl–, HCl

C

S2–, H2S

D

CO32−,CO2CO_{3}^{2 -},CO_{2}

Answer

SO32−,SO2SO_{3}^{2 -},SO_{2}

Explanation

Solution

Since SO2 has a burning sulphur smell which is imitating, hence, X is SO32−SO_{3}^{2 -}, and Y is SO2 which turns acidified K2Cr2O7 solution green due to its reduction to Cr3+ ions.