On heating Mn(OH)_2 with PbO_2 and conc. HNO_ | vedclass

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

Question

(A) When $Mn(OH)_2$ is heated with $PbO_2$ and concentrated $HNO_3$,the manganese is oxidized to the permanganate ion $(MnO_4^-)$. The reaction is: $2

Vedclass · Accepted Answer

$HMnO_4$

Vedclass · Answer

(A) When $Mn(OH)_2$ is heated with $PbO_2$ and concentrated $HNO_3$,the manganese is oxidized to the permanganate ion $(MnO_4^-)$. The reaction is: $2Mn(OH)_2 + 5PbO_2 + 6HNO_3 \rightarrow 2HMnO_4 + 5Pb(NO_3)_2 + 4H_2O$. The pink colour is due to the formation of permanganic acid $(HMnO_4)$,which dissociates to give the characteristic pink-coloured $MnO_4^-$ ions in the solution.

On heating $Mn(OH)_2$ with $PbO_2$ and conc. $HNO_3$,a pink colour is obtained due to the formation of:

Similar Questions

Copper sulphate is not used:

The compounds formed when $KMnO_4$ is heated to $513 \ K$ are . . . . . .

In $Cr_2O_7^{2-}$,every $Cr$ is linked to

In the dichromate dianion $(Cr_2O_7^{2-})$,which of the following statements is correct regarding the $Cr-O$ bonds?

$A$ compound of mercury used in cosmetics,in Ayurvedic and Yunani medicines and known as vermilion is

Vedclass Test Series

Exam Paper Generator

Online Exam Module