Home
Class 12
CHEMISTRY
Which of the following statement are co...

Which of the following statement 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 yellow solution of `Na_(2)CrO_(4)`

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) are correct.
(a) `4NaCl+K_(2)Cr_(2)O_(7)+6H_(2)SO_(4)rarrunderset("(Deep red)")underset()(2CrO_(2)Cl_(2))+4NaHSO_(4)+2KHSO_(4)+3H_(2)O`
(b) `CrO_(2)Cl_(2)+4NaOHrarrunderset("(Yellow)")(Na_(2)CrO_(4))+2NaCl+2H_(2)O`
(c) Chlorine gas is not evolved in the reaction. This is a wrong statement.
(d) `CrO_(2)Cl_(2)` is in the form of red coloured vapours (c) Chlorine is not coloured.
Promotional Banner

Topper's Solved these Questions

  • D-AND -F BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise ASSERTION-REASON TYPE QUESTIONS|23 Videos

  • D-AND -F BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise INTEGER ANSWER TYPE QUESTIONS|15 Videos

  • D-AND -F BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise STRAIGHT OBJECTIVE TYPE MCQS (SINGLE CORRECT OPTION)|16 Videos

  • CYANIDES, ISOCYANIDES, NITROCOMPOUNDS AND AMINES

    DINESH PUBLICATION|Exercise Unit test - 8|20 Videos

  • ELECTROCHEMISTRY

    DINESH PUBLICATION|Exercise ADDITIONAL NUMERICAL PROBLEMS FOR PRACTICE|12 Videos

Similar Questions

Explore conceptually related problems

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

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) ?

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) ?