9
1. 500 32% - (r = 1,2 ) 1 . .
2. , NaOH CuCl2 FeCl2.
3. , 1?
4. ( ): 3; KF; (NH4)2SO4; Na2S? 3.
5. - 6126; KNO3; C2H5OH; C3? .
6. ?
2
10
1. (NH2)2, , 1 10%.
2. Ag+ 10-3 . , , (AgCl) = 1,8×10-10.
3. 0,05 .
4. ? H3AsO4. ? ?
5. 13,0 400 (25)2 0,453. . = 2,02.
6. : MgSO4; AlCl3; (NH4)2S; BaCl2? - MgSO4.
2
11
1. 1 : 3; 34; H2SO4; HNO3? .
2. + , - (): ) 10-4; ) 3,2×10-6; ) 7,4×10-11.
3. :
AgCl¯ + KBr AgBr¯ + KCl;
CdS¯ + FeCl2 CdCl2 + FeS¯?
.
4. , 0,001 9.
5. , 1500 3 6126? = 0,516.
6. = 7: NH4I; KF; NH4CN; BeSO4.
2
|
|
12
1. 30% - H2SO4 (r = 1,22 ) 600 0,2 H2SO4? ?
2. 0,1 .
3. : CuS, CdS, MnS? .
4. ? ? , : 66; 3; AlOHSO4; C25.
5. , -: Cu2+ + 2OH- Cu(OH)2:
) Cl- Zn2+;
) 32- Na+;
) S2- Na+;
) Cl- 2+?
6. :
MgCl2; CH3COONH4; K2S; Ca(NO3)2?
- MgCl2.
2