Which compound acts as an oxidising agent in | vedclass

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Question

(A) In a dry cell (Leclanché cell),the anode is made of zinc $(Zn)$ and the cathode is a carbon rod surrounded by powdered manganese dioxide $(MnO_2)$

Vedclass · Accepted Answer

$MnO_2$

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(A) In a dry cell (Leclanché cell),the anode is made of zinc $(Zn)$ and the cathode is a carbon rod surrounded by powdered manganese dioxide $(MnO_2)$ and carbon. During the discharge process,the $MnO_2$ acts as an oxidising agent where $Mn^{4+}$ is reduced to $Mn^{3+}$. The reaction at the cathode is: $MnO_2 + NH_4^+ + e^- \rightarrow MnO(OH) + NH_3$. Therefore,$MnO_2$ is the oxidising agent.

Which compound acts as an oxidising agent in a dry cell?

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