Potassium manganate ( K 2 MnO 4) is ⋅ obtained when (1) formaldehyde reacts with potassium permanganate in presence of a strong alkali (2) chlorine is passed into the solution of potassium permanganate (3) MnO 2 is fused with KOH in air (4) KMnO 4 reacts with conc H 2 SO 4

Question

Potassium manganate ( K 2 MnO 4) is ⋅ obtained when (1) formaldehyde reacts with potassium permanganate in presence of a strong alkali (2) chlorine is passed into the solution of potassium permanganate (3) MnO 2 is fused with KOH in air (4) KMnO 4 reacts with conc H 2 SO 4 (A) 1, 2 and 3 are correct (B) 1 and 2 are correct (C) 2 and 4 are correct (D) 1 and 3 are correct

Tardigrade Admin · Accepted Answer

2 KOH + underset textmanganese dioxideMnO 2+[ O ] longrightarrow underset textpotassium manganateK 2 MnO 4+ H 2 O underset texttormaldehydeHCHO + underset textpotassium permanganate2 KMnO 4+ underset textalkali2 KOH longrightarrow underset textpotassium manganate2 K 2 MnO 4+ H 2 O + HCOOH

Q. Potassium manganate (K2​MnO4​) is ⋅ obtained when (1) formaldehyde reacts with potassium permanganate in presence of a strong alkali (2) chlorine is passed into the solution of potassium permanganate (3) MnO2​ is fused with KOH in air (4) KMnO4​ reacts with conc H2​SO4​

1, 2 and 3 are correct

1 and 2 are correct

2 and 4 are correct

1 and 3 are correct

2KOH+manganese dioxideMnO2​​+[O]⟶potassium <br/><br/> manganateK2​MnO4​​+H2​O tormaldehydeHCHO​+potassium <br/><br/> permanganate2KMnO4​​+alkali2KOH​⟶potassium <br/><br/> manganate2K2​MnO4​​+H2​O+HCOOH

$2 K O H + manganese dioxide M n O_{2} + [O] ⟶ potassium <br/><br/> manganate K_{2} M n O_{4} + H_{2} O$
$tormaldehyde H C H O + potassium <br/><br/> permanganate 2 K M n O_{4} + alkali 2 K O H ⟶ potassium <br/><br/> manganate 2 K_{2} M n O_{4} + H_{2} O + H COO H$