Redox Reactions And Electrochemistry Ques 120
Question: When $ MnO_2 $ is fused with KOH, a coloured compound is formed, the product and its colour is [IIT Screening 2003]
Options:
A) $ K_2MnO_4 $ , purple green
B) $ KMnO_4 $ , purple
C) $ Mn_2O_3 $ , brown
D) $ Mn_3O_4 $ black
Show Answer
Answer:
Correct Answer: A
Solution:
$ 2MnO_2+4KOH+O_2\xrightarrow{\Delta }\underset{purplegreen}{\mathop{2K_2MnO_4}},+2H_2O $ .
