P-Block Elements Ques 309
Question: Which of the following acid possesses oxidising, reducing and complex forming properties
[MNR 1985]
Options:
A) $ HNO_3 $
B) $ H_2SO_4 $
C) $ HCl $
D) $ HNO_2 $
Show Answer
Answer:
Correct Answer: D
Solution:
$ HNO_2 $ can be either reduced to nitric oxide $ (NO) $ or oxidised to nitric acid and hence it acts both as an oxidising as well as a reducing agent.
$ 2HNO_2\to 2NO+H_2O+[O] $
$ HNO_2+[O]\to HNO_3 $
