Which is not the true statement about KMnO 4 ?

Question

Which is not the true statement about KMnO 4 ? (A) Its solution is unstable in acidic medium (B) Its small quantity added to conc. H 2 SO 4, a green coloured solution containing MnO 3+ions is formed (C) MnO 4-changes to Mn 2+ in basic solution (D) It is self-indicator in Fe 2+ or Cr 2 O 42- titration

Tardigrade Admin · Accepted Answer

MnO 4-charges to MnO 42- or MnO 2 in basic medium

Q. Which is not the true statement about $K M n O_{4}$ ?

Its solution is unstable in acidic medium

Its small quantity added to conc. $H_{2} S O_{4}$ , a green coloured solution containing $M n O_{3}^{+}$ ions is formed

$M n O_{4}^{-}$ changes to $M n^{2 +}$ in basic solution

It is self-indicator in $F e^{2 +}$ or $C r_{2} O_{4}^{2 -}$ titration

$M n O_{4}^{-}$ charges to $M n O_{4}^{2 -}$ or $M n O_{2}$ in basic medium

Q. Which is not the true statement about KMnO4​ ?

Its solution is unstable in acidic medium

Its small quantity added to conc. H2​SO4​, a green coloured solution containing MnO3+​ions is formed

MnO4−​changes to Mn2+ in basic solution

It is self-indicator in Fe2+ or Cr2​O42−​ titration

MnO4−​charges to MnO42−​ or MnO2​ in basic medium

Q. Which is not the true statement about $K M n O_{4}$ ?

Its small quantity added to conc. $H_{2} S O_{4}$ , a green coloured solution containing $M n O_{3}^{+}$ ions is formed

$M n O_{4}^{-}$ changes to $M n^{2 +}$ in basic solution

It is self-indicator in $F e^{2 +}$ or $C r_{2} O_{4}^{2 -}$ titration

$M n O_{4}^{-}$ charges to $M n O_{4}^{2 -}$ or $M n O_{2}$ in basic medium