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:




:

































 

 

 

 


: . : - H2O2; H2O2;




ò ӻ

: - H2O2; H2O2; .

: , , H2O2, KI, KMnO4, H3OOH, H2SO4.

 

 

1 H2O2

KI, , H2O2 (3%):

KI + H3OOH + H2O2 = H3OOK + I2 + H2O

 

- . I2?

________________

 

H2O2 ?

_____________________

 

2 ³ KMnO4

KMnO4, , H2O2:

KMnO4 + H2O2 + H2SO4 → ___________________________________

_______________________________________________________________________

 

. H22 ?

___________________________________________________________________________

 

 

H2O2 - ?

________________

 

 

3 H2O2

H2O2 H2SO4 (), H2O2 :

 

KI + H2O2 + H2SO4 →______________________________________

________

 

, . .

__________________________________________________________________________________________

 

1 22.

2 22.

3 Գ 22.

4 22; 22; 22 .

5 , 22 . - , 22.

6 ϳ :

H2S + 22 = H2SO4 + 2

22 + HIO3 = I2 + O2 + 2

 

3

: ò

(Ѳ) ԲIJ»

: .

: . Br2,: H2SO4, K2r2O7, CuSO4, FeSO4, MnSO4.

 

 

1 H2S

) () , 2 . . . , :

 

FeS + HCl →________________________________________

 

) H2S , ( ). H2S .

H2S? . ?

______________________________________________________________________________________

 

 

2 ³ H2S

) KMnO4, , H2S:

KMnO4 + H2S + H2SO4 →______________________________________

______________________________________________________________________

 

) K2Cr2O7, , H2S:

K2Cr2O7 + H2S + H2SO4 → __________________________________

_________

 

, H2S. H2S?

___________________________

 

3

: Pb(NO3)2, CuSO4, FeSO4, MnSO4, CdSO4 H2S ( H2S↑). , . :

 

Pb(NO3)2 + H2S → _________________________________________

_______________________________________________________________________

 

CuSO4 + H2S → __________________________________________

________

FeSO4 + H2S → __________________________________________

_______________________________________________________________________

MnSO4 + H2S → ___________________________________________

__________

CdSO4 + H2S → _________________________________________

__________

 

. ?

_________________

4 ó

Na2S . .

:

 

Na2S + H2O → _______________________________________

____________________________________________________________________

 

, .

______________________________________________________________________________________

 

 

1 S .

2 H2S.

3 2S ?

4 2S 䳿 ? , .

5 ³ 2S?

6 , , .

7 , 䳿 .

8 .

9 .

10 :

S → FeS → H2S → K2S →KHS

 

 


 

4

: (V) ,

Բί , ԲҲ»

: (V) .

: , , , H2S4, Na2SO3, H2S, KMnO4.

 





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: 2015-11-05; !; : 744 |


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