Question

White Mn(OH)2 becomes green coloured compound on reaction with sodium peroxide. It is

• A. Because of the formation of manganate ions.
• B. Because of the formation of MnO(OH)2.
• C. Because of the formation of Mn2+ ions.
• D. Because of the formation of permanganate ions.

Answer 1

Answer: (A)

Because of the formation of manganate ions.

Answer 2

Mn(OH)2 + 2O22– $\longrightarrow$MnO42– (green) + 2OH.