Page 77 - Chemistry - XII

4HNO → HNO + HNO +H O+ 2NO
2 2 3 2

FeSO +NO+5H O FeH ONOSO

4 2 2 5 4

Brown ring

2KMnO+3H SO +5NO KSO+ 2MnSO+5NO+ HO

4 2 4 2 2 4 4 3 2

2C H NH +O CH 6 NN CH +H O
6
2
6
5 2
From nitrite 5 2 Deep blue 5 2

NO +H SO HSO+ HNO
2 2 4 4 2
2KI+2HNO +2HSO 2KHSO+ I+ 2NO+ 2H O
2 2 4 4 2 2
I ++Starch Deep blue complex
2
NO - 3
NO +H SO HSO+ HNO

3 2 4 4 3

2FeSO+ 2HNO +H SO Fe SO +2HO +2NO
4 3 2 4 2 4 3 2

F FeSO +NO+5H O FeH ONOSO

4 2 2 5 4
Brown ring

NO +H SO HSO+ HNO
3 2 4 4 3

Cu +4HNO Cu NO +2HO +2NO
3 3 2 2 2

Cl +AgNO AgCl+NO

3 3
White ppt.

AgCl+2NH OH Ag NH Cl+ 22H O
4 3 2 2
S oluble

Cl +H SO HCl+ HSO 4

4
2
Conc.

MnO+ 4HCl MnCl +2H OO+Cl
2 2 2 2
Greenish yellow