Qualitative Analysis - Result Question 41

Fill in the Blanks

44. The formula of the deep red liquid formed on warming dichromate with $KCl$ in concentrated sulphuric acid is ______.

(1993, 1M)

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Answer:

Correct Answer: 44. $CrO_2Cl_2$

Solution:

Heating chloride salt with $K _2 Cr _2 O _7$ in conc. $H _2 SO _4$ gives off a deep vapour of chromyl chloride $\left(CrO _2 Cl _2\right)$.