Redox Reaction By Oxidation Number Method 01 Ques4
Question:
The balanced reaction for the oxidation of $Ce^{3+}$ by $MnO_4^-$ in an acidic medium is one where $MnO_4^-$ is reduced to $Mn^{2+}$. What is the correct balanced form of $Ce^{3+}$?
Options:
A) $Ce^{4+}$
B) $Ce^{3+}$
C) $Ce$
D) $CeO_2$
Show Answer
Answer: a
Explanation:
A) Correct, $Ce^{3+}$ is oxidized to $Ce^{4+}$, as observed in the balanced reaction $MnO_4^- + 5Ce^{3+} + 8H^+ \rightarrow Mn^{2+} + 5Ce^{4+} + 4H_2O$.
B) Incorrect, $Ce^{3+}$ is a reactant, not a product in this case.
C) Incorrect, $Ce$ is not formed in this reaction.
D) Incorrect, $CeO_2$ is not relevant here; the reaction involves ions in solution.
BETA
