During which of the following changes will an exchange of $5$ electrons take place?
- A$MnO_4^- \to Mn^{2+}$
- B$CrO_4^{2-} \to Cr^{3+}$
- C$MnO_4^{2-} \to MnO_2$
- D$Cr_2O_7^{2-} \to 2Cr^{3+}$
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Similar Questions
Which of the following is not true for oxidation?
Which of the following correctly represents the process of reduction?
In an acidic medium,when $KMnO_4$ is reduced by oxalic acid,what is the change in the oxidation state of $Mn$?
Difficult
View SolutionIdentify the correct statement for the reaction stated below:
$Ag_2O + H_2O + 2e^- \rightarrow 2Ag + 2OH^{-}$
$Ag_2O + H_2O + 2e^- \rightarrow 2Ag + 2OH^{-}$
Identify the redox couples involved in the following reactions:
$(a) \ Cu + Zn^{+2} \to Cu^{+2} + Zn$
$(b) \ Mg + Fe^{+2} \to Mg^{+2} + Fe$
$(c) \ Br_{2} + 2Cl^{-} \to Cl_{2} + 2Br^{-}$
$(d) \ Fe + Cd^{+2} \to Cd + Fe^{+2}$
$(a) \ Cu + Zn^{+2} \to Cu^{+2} + Zn$
$(b) \ Mg + Fe^{+2} \to Mg^{+2} + Fe$
$(c) \ Br_{2} + 2Cl^{-} \to Cl_{2} + 2Br^{-}$
$(d) \ Fe + Cd^{+2} \to Cd + Fe^{+2}$
Medium
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