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Precipitation Reaction

If CO2 gas ...

Question

If $C O_{2}$ gas is passed into $a q . N a_{2} C r O_{4}$ yellow solution :

a q . N a_{2} C r O_{7} (o r a n g e)

solution is formed

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a q . C r_{2} {(C O_{3})}_{2}

is formed

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C r {(O H)}_{3}

is precipitated

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no action

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Solution

The correct option is C $a q . N a_{2} C r O_{7} (o r a n g e)$ solution is formed
Reaction:
$N a_{2} C r O_{4} + H_{2} O + C O_{2} \to N a_{2} C r_{2} O_{7} + N a H C O_{3}$
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