1. .
2. .
3. .
4. , , .
5. ; .
6. , .
7. , .
1. 600 16% ? 1,15 /.
2. 4% ( . . 1) 120 0,1 AgNO3?
3. 2,64 . . 1,080 /.
4. 12% 3% 120 8% ? . 1.
9
:
: , .
: , , , : , , , , 0,1 NaCl, Na2SO4, Na2CO3, Na2SO3, CH3COO(NH4), (NH4)2SO4; 1
ZnCl2, Al2(SO4)3, FeCl3, .
( (.) - . -. , :
(6105)n + n2 = nC6H 12O6
.
- , . , . , :
1) , ( ) . N4CI, Mg(N03)2, Fe1;
2) , ( ), , 3Na, Na2CO3, NaHCO3;
3) , ( ), , CHaCOON4, I2S3, (NH4)2S.
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, (NaCI, KNO3, NaCIO4; .), , . +, - .
- F1. F() H1, , Fe3+.
Fe3+ + HOH = [ FeOH]2+ + H+ (1)
͗ [FeOH]2+ (KFeOH = 1,4- 10-12), + . :
FeCl3+HOH = FeOHCl2 + HCl. (2)
1,2 FeCl3. , (Cu(N03)2, 11 . .), , (Na2S, 04 . .), , . , :
2- :
[FeOH]2+ + = [Fe ()2]+ + +;
FeOHCl2 +HOH = Fe(OH)2Cl + HCl; (3)
3- :
[F()2]+ + = F()3 + +;
F()21 + = F()3 + 1. (4)
, , , , . , , 1> 2> (. 1).
[FeO]2+ - , .
, , , Fe.3++2 = Fe(H)3 + 3H+, ( - [Fe]2+).
Na2S + HOH = NaHS + NaOH (6)
, , C3NH4. :
3- +NH4 + = 3H +N 2. (7)
. > , > , = , .
, , , Na2S, () :
S-2 + HOH = HS- + OH- (5)
1 () 25
HN2 | 4,6 10 - 4 | |
HCN | 7,9 10-10 | |
H2SO3 | K1=1,6 10-2 ; 2 = 6,2 10-8 | |
H2S | K1 =1 10-7 ; K2 = 4 10-14 | |
2 | K1 = 4,5 10-7 K2 = 4,7-10-11 | |
1,75 10-5 | ||
304 | 1=7,110-3; 2= 6,310-8; 3= 510-13 | |
HCIO | 510-8 | |
NH40H | 1,75 10-5 | |
1() | 3=10-9 | |
(III) | F()3 | K1 =410-9; 2=610-11; 3= 410-12 |
g()2 K2 | K2 =1,510-3 | |
u()2 K2 | K2 = 10-7 | |
()2 | K2 = 210-1 | |
Zn(OH)2 | 1 = 10-5; 2 = 5 10-7 |
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