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Question

When $C O_{2}$ is passes into aqueous $K_{2} C r O_{4}$ solution, this changes to another colour. What is the another colour?
Black
Pink
Yellow
Orange

A

Black

B

Yellow

C

Orange

D

Pink

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Solution

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$C O_{2} + H_{2} O ⇌ H_{2} C O_{3}$ ,

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