Assign A, B, C, D from the given type of reac | vedclass

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

Question

(D) In the reaction $MnO_2 + 2KOH + \frac{1}{2}O_2 \longrightarrow K_2MnO_4 + H_2O$:The oxidation state of $Mn$ in $MnO_2$ is $+4$.The oxidation state

Vedclass · Accepted Answer

$D$. for either thermal combination redox reaction or thermal decomposition redox reaction.

Vedclass · Answer

(D) In the reaction $MnO_2 + 2KOH + \frac{1}{2}O_2 \longrightarrow K_2MnO_4 + H_2O$:The oxidation state of $Mn$ in $MnO_2$ is $+4$.The oxidation state of $Mn$ in $K_2MnO_4$ is $+6$.The oxidation state of $O$ in $O_2$ is $0$,and in $K_2MnO_4$ and $H_2O$ it is $-2$.Since the oxidation state of $Mn$ increases from $+4$ to $+6$ (oxidation) and the oxidation state of $O$ decreases from $0$ to $-2$ (reduction),this is an intermolecular redox reaction.Specifically,it is a combination reaction where $MnO_2$ reacts with $KOH$ and $O_2$ to form a single product $K_2MnO_4$ along with water.Therefore,it fits the category of a thermal combination redox reaction. The correct option is $D$.

Assign $A, B, C, D$ from the given type of reaction.
$MnO_2 + 2KOH + \frac{1}{2}O_2 \longrightarrow K_2MnO_4 + H_2O$

Similar Questions

Write the balanced chemical equation for the following reaction in an acidic medium using the ion-electron method:
Permanganate ion $(MnO_4^-)$ reacts with sulphur dioxide gas to produce $Mn^{+2}$ and hydrogen sulphate ion $(HSO_4^-)$.

The dark purple colour of $KMnO_4$ disappears in the titration with oxalic acid in acidic medium. The overall change in the oxidation number of manganese in the reaction is.

Consider the following statements:
In the chemical reaction:
$MnO_2 + 4HCl \to MnCl_2 + 2H_2O + Cl_2$
$(1)$ Manganese ion is oxidised
$(2)$ Manganese ion is reduced
$(3)$ Chloride ion is oxidised
$(4)$ Chloride ion is reduced.
Which of these statements are correct?

In the following balanced reaction,
$X\,MnO_4^- + Y\,C_2O_4^{2-} + Z\,H^+ \rightleftharpoons X\,Mn^{2+} + 2Y\,CO_2 + \frac{Z}{2}\,H_2O$
values of $X, Y$ and $Z$ respectively are

In alkaline medium,$MnO_4^{-}$ oxidises $I^{-}$ to:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assign $A, B, C, D$ from the given type of reaction.$MnO_2 + 2KOH + \frac{1}{2}O_2 \longrightarrow K_2MnO_4 + H_2O$