Identify compounds A to E and also explain the reactions involved. OR A violet compound of manganese (A) decomposes on heating to liberate oxygen and compounds (B) and (C) of manganese are formed. Compound (C) reacts with KOH in the presence of KNO 3 to give compound (B). On heating compound (C) with a mixture of conc. H 2 SO 4 and NaCl, chlorine gas is liberated and a compound (D) of manganese along with other products is formed. Identify compounds (A) to (D) and also explain the reaction involved.

Question

Philoid · Accepted Answer

Deep blue solution

Ca(OH)₂ + CO₂→ CaCO₃ (E) + H₂O

CaCO₃ + H₂O → Ca(HCO₃)₂

A= Copper sulphate

B= copper nitrate

C= Tetraamminecopper(II) sulphate

D=Carbon Dioxide

E= Calcium Carbonate

OR

KM_nO₄ is a violet compound of manganese and liberates oxygen as well as two other compounds.

Compound C is M_nO₂ which reacts with KOH in the presence of KNO₃ to give compound KM_nO₄.

It is given by the reaction,

A-Potassium Permanganate

B-Potassium Manganate

C- Manganese dioxide

D- Manganese chloride