Q.

Which one of the following statements is correct when SO2 is passed through acidified K2Cr2O7solution?

Moderate

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By Expert Faculty of Sri Chaitanya

SO2 is reduced.

Green Cr2SO43 is formed.

The solution turns blue.

The solution is decolourised.

answer is 2.

(Detailed Solution Below)

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Detailed Solution

K2Cr2O7+H2SO4+3SO2→K2SO4+Cr2SO43+H2Oaq. Cr2SO43 is green coloured solution.

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