When MnO 2 is heated with PbO 2 and conc. HNO 3, pink colour is obtained due to formation of

Question

When MnO 2 is heated with PbO 2 and conc. HNO 3, pink colour is obtained due to formation of (A) KMnO 4 (B) HMnO 4 (C) P b(M n O4)2 (D) PbMnO 4

Tardigrade Admin · Accepted Answer

2 MnO 2+4 HNO 3 arrow 2 Mn ( NO 3)2+2 H 2 O + O 2 2 Mn ( NO 3)2+5 PbO 2+6 HNO 3 arrow underset text Permanganic acid(violet pink) 2 HMnO 4+5 Pb ( NO 3)2+2 H 2 O

Q. When $M n O_{2}$ is heated with $P b O_{2}$ and conc. $H N O_{3}$ , pink colour is obtained due to formation of

$K M n O_{4}$

$H M n O_{4}$

$P b (M n O_{4})_{2}$

$P b M n O_{4}$

$2 M n O_{2} + 4 H N O_{3} \to 2 M n (N O_{3})_{2} + 2 H_{2} O + O_{2}$
$2 M n (N O_{3})_{2} + 5 P b O_{2} + 6 H N O_{3} \to Permanganic acid(violet pink) 2 H M n O_{4} + 5 P b (N O_{3})_{2} + 2 H_{2} O$

Q. When MnO2​ is heated with PbO2​ and conc. HNO3​, pink colour is obtained due to formation of

KMnO4​

HMnO4​

Pb(MnO4​)2​

PbMnO4​