Hydrogen And Its Compounds Question 33

Question: An inorganic compound gives off $ O_2 $ when heated, turns an acidic solution of KI violet and reduces acidified $ KMnO_4 $ . The compound is

Options:

A) $ SO_3 $

B) $ KNO_3 $

C) $ H_2O_2 $

D) All of these

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $ 2H_2O_2\xrightarrow{\Delta }2H_2O+O_2 $

$ 2KI+H_2O_2\to 2KOH+I_2 $

$ 2KMnO_4+3H_2SO_4+5H_2O_2\to $

$ K_2SO_4+2MnSO_4+8H_2O+5O_2 $