Mole Concept and Some Basic Concepts of ChemistryeasyMCQ SINGLE

How many moles of are required to oxidize 1 mole of in acidic medium?Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

Question

How many moles of $K_2Cr_2O_7$ are required to oxidize 1 mole of $FeSO_4$ in acidic medium?

Answer: A

💡 Solution & Explanation

$Cr_2O_7^{2-} + 14H^+ + 6Fe^{2+} \rightarrow 2Cr^{3+} + 6Fe^{3+} + 7H_2O$. Stoichiometric ratio is $1:6$. Thus, $1/6$ mole of $K_2Cr_2O_7$ is required for 1 mole of $FeSO_4$.

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