A mixture of NaCl and `K_(2)Cr_(2)O_(7)` is heated with conc. `H_(2)SO_(4)` ,deep red vapours and formed .Which of the following statements is false?

Options

A. The vapours contain `CrO_(2)Cl_(2)` only
B. The vapours give a yellow solution with NaOH
C. The vaopurs when passed into lead acetate in acetic give a yellow precipitate.
D. The vapours contain `CrO_(2)Cl_(2)` and `Cl_(2)`

Answer

D

Explanation

`4NaCl+K_(2)Cr_(2)O_(7)+3H_(2)SO_(4)to2NaS_(2)O_(4)+K_(2)SO_(4)+2CrO_(2)Cl_(2)+3H_(2)O`
Chromyl chloride test is a C.T for `Ci^(-)`
`CrO_(2)Cl_(2)+underset(("yellow"))(4NaOH)toNa_(2)Cro_(4)+2H_(2)O+2NaCl`
`Na_(2)CrO_(4)+underset("yellow ppt")((CH_(3)CrO)_(2))pbtopbCro_(4)+2CH_(3)COONa`