SELECT * FROM question_mgmt as q WHERE id=3221 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=50 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 11th chemistry Hydrogen write chemical reactions to justify that hydrogen

Question:

Write chemical reactions to justify that hydrogen peroxide can function as an oxidizing as well as reducing agent.

Answer:

Hydrogen peroxide, H2O2 acts as an oxidizing as well as a reducing agent in both acidic and alkaline media.

Reactions involving oxidizing actions are:

1)  2Fe2+ + 2H+  + H2O2  →  2Fe3+  +  2H2O

2) Mn2+  +  H2O2   →   Mn4+   +  2OH-

3) PbS  +  4H2O2    →   PbSO4  +  4H2O

4) 2Fe2+  + H2O2   →  2 Fe3+  + 2OH-

 

Reactions involving reduction actions are:
1)  2MnO-4  + 6H+  +  5H2O2  →  2Mn2+  +  8H2O  + 5O2

2) I2  + H2O2  +  2OH-   →   2l- + 2H2O + O2

3) HOCl  +  H2O2   →  H3O+  + Cl-  +  O2

4) 2MnO- +  3H2O2   →  2MnO2  +  3O2  + 2H2O  + 2OH-


SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='2' AND subId='9' AND ex_no!=0 AND status=1 and id!=3221 ORDER BY views desc, last_viewed_on desc limit 0,10
SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='2' AND subId='9' AND ex_no!=0 AND status=1 and id!=3221 ORDER BY last_viewed_on desc limit 0,10

Comments

  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.


  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.


  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.


Comment(s) on this Question