Which of the following reagents can be used to distinguish between and ?

CHEMISTRY · Single correct · GCSE · Chemistry · Chemical Analysis · Chemical Analysis

Problem

Which of the following reagents can be used to distinguish between

\text{SO}_2

and

\text{CO}_2

? (1) Lime water (2)

\text{BaCl}_2

solution (3)

\text{H}_2\text{O}_2 + \text{BaCl}_2

solution + dil. HCl (4) Acidified dichromate paper