Question

$Manganesesalt+Pb{O}_2+conc.HN{O}_3⟶$ The solution has purple color. The color is due to :

• A. $HMn{O}_4$
• B. A lead salt
• C. $Mn{\left(N{O}_3\right)}_2$
• D. $H_{2}Mn{O}_4$

Answer 1

The correct option is A $HMn{O}_4$

Option (A) is correct.
$Manganesesalt+Pb{O}_2+conc.HN{O}_3⟶$ The solution has purple color. The color is due to $HMn{O}_4$.
$M{n}^{2+}$ is oxidized to $M{n}^{7+}$ forming $HMn{O}_4$.