Question

The compound which is responsible for the green
colour formed when SO, is bubbled through acidified
potassium dichromate solution.​

Answer 1

Answer:

Sulphur dioxide

Sulphur dioxide gas (SO2) is bubbled through acidified potassium dichromate (K2Cr2O7/H+). The orange solution turns green.

Explanation:

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Answer 2

Answer:

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Explanation:

If sulfur dioxide gas is bubbled through acidified potassium dichromate solution, the orange solution turns green, indicating that Cr_2O_7^{2}Cr

2

O

7

2

has been reduced to Cr^{3+}Cr

3+

.

Cr_2O_7^{2} + 2H^+ + 3SO_2 \rightarrow 2Cr^{3+} + H_2O + 3SO_4^{2}Cr

2

O

7

2

+2H

+

+3SO

2

→2Cr

3+

+H

2

O+3SO

4

2

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