NEET | 2016SolutionHard

Question

Which one of the following statements is correct when SO2 is passed through acidified K2Cr2O7 solution?

Options

A.

The solution turns blue.

B.

The solution is decolourized.

C.

SO2 is reduced.

D.

Green Cr2(SO4)3 is formed.

Solution

K2Cr2O7 + SO2 + H2SO4 → K2SO4 + Cr2(SO4)3 + H2O
                                                             Green

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