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Question

Which of the following statement(s) is (are) correct when a mixture of NaCl and K2Cr2O7 is gently warmed with conc.H2SO4?



Your Answer
A
A deep red vapor is evolved
Your Answer
B
The vapors when passed into NaOH solution give yellow solution of Na2CrO4
Your Answer
C
Chromyl chloride is also forms
Correct Answer
D
All of the above

Solution

The correct option is D All of the above
The Corresponding reactions are 
4NaCl+K2Cr2O7+6H2SO42CrO2Cl2Red vapour+4NaHSO4+2KHSO4+3H2O
CrO2Cl2Chromyl chloride+4NaOHNa2CrO4Yellow+2NaCl+2H2O

 

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