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Which of the following salt on heating w...

Which of the following salt on heating with solid `K_(2)Cr_(2)O_(7)` and Conc. `H_(2)SO_(4)` , orange red vapours are evolved which turn NaOH solution yellow.

A

`NaBr`

B

`NaCl`

C

`NaNO_(3)`

D

`NaI`

Text Solution

Verified by Experts

The correct Answer is:
B
`NaCl_((s))+K_(2)Cr_(2)O_(7)_((s))+H_(2)SO_(4)(few drops) overset("Non-redox")underset("reaction")(to) underset("Orange red vapours")(CrO_(2)Cl_(2)(uarr)) +HO`
`CrO_(2)Cl_(2)+OH^(-)(aq.) to underset("Yellow solution")(CrO_(4)^(2-))(aq.)+Cl^(-)+2H_(2)O`
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