In acidic medium,the required number of moles | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) In acidic medium,$KMnO_4$ acts as an oxidizing agent and is reduced to $Mn^{2+}$.$MnO_4^- + 8H^+ + 5e^- \rightarrow Mn^{2+} + 4H_2O$Ferrous oxalat

Vedclass · Accepted Answer

$4.167$

Vedclass · Answer

(B) In acidic medium,$KMnO_4$ acts as an oxidizing agent and is reduced to $Mn^{2+}$.$MnO_4^- + 8H^+ + 5e^- ightarrow Mn^{2+} + 4H_2O$Ferrous oxalate $(FeC_2O_4)$ acts as a reducing agent where $Fe^{2+}$ is oxidized to $Fe^{3+}$ and $C_2O_4^{2-}$ is oxidized to $CO_2$.$FeC_2O_4 ightarrow Fe^{3+} + 2CO_2 + 3e^-$To balance the redox reaction,the number of electrons lost must equal the number of electrons gained.Multiply the oxidation half-reaction by $5$ and the reduction half-reaction by $3$:$3MnO_4^- + 5FeC_2O_4 + 24H^+ ightarrow 3Mn^{2+} + 5Fe^{3+} + 10CO_2 + 12H_2O$From the balanced equation,$3 \, mol$ of $KMnO_4$ react with $5 \, mol$ of $FeC_2O_4$.Therefore,for $2.5 \, mol$ of $KMnO_4$,the moles of $FeC_2O_4$ required are:$	ext{Moles} = \frac{5}{3} 	imes 2.5 = 4.167 \, mol$.

In acidic medium,the required number of moles of ferrous oxalate $(FeC_2O_4)$ for the reduction of $2.5 \, mol$ of $KMnO_4$ is:

Similar Questions

The oxidation state of manganese in the product obtained in a reaction of potassium permanganate and hydrogen peroxide in basic medium is $.....$

In order to oxidize a mixture of one mole of each of $FeC_2O_4$,$Fe_2(C_2O_4)_3$,$FeSO_4$ and $Fe_2(SO_4)_3$ in acidic medium,the number of moles of $KMnO_4$ required is

$2KMnO_4 + 3H_2SO_4 + 5H_2O_2 \rightarrow K_2SO_4 + 2MnSO_4 + 8H_2O + 5O_2$. Find the normality of $H_2O_2$ solution,if $20 \ mL$ of it is required to react completely with $16 \ mL$ of $0.02 \ M \ KMnO_4$ solution. (Molar mass of $KMnO_4 = 158 \ g \ mol^{-1}$)

Assertion $(A)$: Ferricyanide ion oxidises $H_2O_2$ to $H_2O$ in basic medium.
Reason $(R)$: Oxidation product of $H_2O_2$ is $O_2$. Which of the following is true?

The conversion of $2,3-$dibromobutane to $2-$butene in the presence of $Zn$ is an example of ...........

Vedclass Test Series

Exam Paper Generator

Online Exam Module