Acidified `K_(2)Cr_(2)O_(7)` solution turns green when `Na_(2)SO_(3)` is added to it. This is due to the formation of
Acidified `K_(2)Cr_(2)O_(7)` solution turns green when `Na_(2)SO_(3)` is added to it. This is due to the formation of
A. `CrO_(4)^(2-)`
B. `Cr_(2)(SO_(3))_(3)`
C. `CrSO_(4)`
D. `Cr_(2)(SO_(4))_(3)`
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Correct Answer - D
`K_(2)Cr_(2)O_(7)` is oxidising reagent.
`K_(2)Cr_(2)O_(7) + 3Na_(2)SO_(3) + 4H_(2)SO_(4) to 3Na_(2)SO_(4) + K_(2)SO_(4) + Cr_(2)(SO_(4))_(3) + 4H_(2)O`
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