The incorrect statement in respect of chromyl chloride test is
Show Hint
- formation of red vapours
- formation of lead chromate
- formation of chromyl chloride
- liberation of chlorine
The Correct Option is D
Solution and Explanation
The chromyl chloride test is used for the qualitative detection of chloride ($Cl^-$) ions.
Step 2: Observations
Heating a chloride salt with $K_2Cr_2O_7$ and conc. $H_2SO_4$ produces reddish-brown vapours of chromyl chloride ($CrO_2Cl_2$). Passing these into $NaOH$ and adding lead acetate forms a yellow precipitate of lead chromate ($PbCrO_4$).
Step 3: Identification of Error
During this reaction, chlorine gas ($Cl_2$) is not liberated.
Final Answer: (d)
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