Potassium dichromate acts as a strong oxidizi | vedclass

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(B) In acidic solution,potassium dichromate $(K_2Cr_2O_7)$ acts as an oxidizing agent. The reduction half-reaction is given by:$Cr_2O_7^{2-} + 14H^+ +

Vedclass · Accepted Answer

$+6$ to $+3$

Vedclass · Answer

(B) In acidic solution,potassium dichromate $(K_2Cr_2O_7)$ acts as an oxidizing agent. The reduction half-reaction is given by:$Cr_2O_7^{2-} + 14H^+ + 6e^- \rightarrow 2Cr^{3+} + 7H_2O$In $Cr_2O_7^{2-}$,the oxidation state of $Cr$ is calculated as:$2x + 7(-2) = -2$ $\Rightarrow 2x - 14 = -2$ $\Rightarrow 2x = 12$ $\Rightarrow x = +6$In $Cr^{3+}$,the oxidation state of $Cr$ is $+3$.Thus,the oxidation state of chromium changes from $+6$ to $+3$.

Potassium dichromate acts as a strong oxidizing agent in acidic solution. During this process,the oxidation state of chromium changes from

Similar Questions

Which of the following sets includes all the species that will change the orange colour of $K_2Cr_2O_7$ in acidic medium?

Which among $KI, FeSO_4, K_2MnO_4, KMnO_4$ cannot be oxidised by $O_3$?

Which of the following is not oxidized by $O_3$?

$(A) \ HOCl + H_2O_2 \rightarrow H_3O^{+} + Cl^{-} + O_2$
$(B) \ I_2 + H_2O_2 + 2 OH^{-} \rightarrow 2 I^{-} + 2 H_2O + O_2$
Choose the correct option.

Which of the following is the strongest reducing agent?

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