A bromide ion does not interfere with the chromyl chloride test because when a…

CHEMISTRY · Single correct · ICSE · Chemistry · Analytical Chemistry · ISC

Problem

A bromide ion does not interfere with the chromyl chloride test because when a bromide is present: (1)

\text{Br}_2

is liberated, which leaves the

\text{NaOH}

solution colourless (2)

\text{CrO}_2\text{Br}_2

formed does not volatilise as

\text{CrO}_2\text{Cl}_2

does (3)

\text{CrO}_2\text{Br}_2

does not react with

\text{NaOH}

(4) no gaseous substance containing bromine is produced