When acidified K_2Cr_2O_7 solution is added t | vedclass

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Question

(C) Acidified potassium dichromate $(K_2Cr_2O_7)$ acts as a strong oxidizing agent in an acidic medium. It oxidizes stannous ions $(Sn^{2+})$ to stann

Vedclass · Accepted Answer

$Sn^{4+}$

Vedclass · Answer

(C) Acidified potassium dichromate $(K_2Cr_2O_7)$ acts as a strong oxidizing agent in an acidic medium. It oxidizes stannous ions $(Sn^{2+})$ to stannic ions $(Sn^{4+})$ while being reduced to chromic ions $(Cr^{3+})$. The balanced chemical equation is: $Cr_2O_7^{2-} + 14H^+ + 3Sn^{2+} \rightarrow 2Cr^{3+} + 3Sn^{4+} + 7H_2O$ Thus,$Sn^{2+}$ is oxidized to $Sn^{4+}$.

When acidified $K_2Cr_2O_7$ solution is added to $Sn^{2+}$ salts,then $Sn^{2+}$ changes to:

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