17
1. 40% - ( ) HNO3 1,25 
. .
2. 10 1 . 1,33 . = 40. .
3. + - , 6,2.
4. 23 0,1 2,11×10-3. 1.
5. (3Ag) = 2,0×10-3. 4,1 3Na 100 3 . .
6. - :
) NaHCO3 HCl.;
) Pb(CH3COO)2 Na2S.
2
18
1. , 300 25% - 400 40% - ( ) .
2. 20 10 . 25 40 . , .
3. , :
) + 2×10-7 
;
) + 5×10-4 ;
) - 5×10-6 .
4. HNO2 0,2?
5. 50 0,001 HCl 450 0,0001 AgNO3. ?
6. , - :
) NO2- + H+ HNO2;
) Cu2+ + 2OH- Cu(OH)2¯;
) Pb2+ + 2I- PbI2¯.
2
19
1. 500 32% - ( ) HNO3 (r = 1,20 ) 1 . HNO3 ?
2. 0,0106 0,4×10-3 , . 0,337 . , , 1,19.
3. ( = 7,36) , ( = 7,53)?
4. , a = 0,03?
5. BaSO4 25 1,1×10-10. 2,33×10-2 BaSO4 25?
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6. : NaCN; KNO2; KNO3; CH3COONH4; CaCl2; NaCl; KBr? - CH3COONH4.
2
