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Which of the following statement (s) is ...

Which of the following statement (s) is (are) correct when a mixture of `NaCl` and `K_(2)Cr_(2)O_(7)` is gently warmed with conc. `H_(2)SO_(4)` ?

A

Deep red vapours are evolved

B

The vapours when passed through NaOH solution, give a yellow solution.

C

Chlorine gas is evolved

D

Chromyl chloride is formed.

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
(a,b,d) `K_(2)Cr_(2)O_(7)+underset(darr"heat")(6H_(2)SO_(4))+4 NaCl`
`2KHSO_(4)+4NaHSO_(4)+underset("(Deep red Vapours)")underset()(2CrO_(2)Cl_(2)+3H_(2)O)`
`4NaOH+CrO_(2)Cl_(2)+underset("(yellow solution)")underset()(Na_(2)CrO_(4))+2NaCl+2H_(2)O.`
Chlorine gas is not evolved.
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