1. , 0.9% NaCl , ρ≈ 1/. NaCl 400 ?
2. B6 ( ) 5% . 1c3, ρ ≈ 1/?
3. , 1 0.1% ? ( ρ=1/).
4. , 1/.
5. 10% CaCl2, ρ=1.1 /3.
6. 0.1M H2SO4. ( H2SO4).
7. 500 . .
8. 10% CaCl2 10, 2 . CaCl2 10- ? ( ).
9. 5% ρ= 1.06 /.
10. 0.1N Ba(OH)2? ( OH- Ba(OH)2).
11. 200 10% NaCl (ρ=1.1 /) 5M ?
12. 10 Ca2+. Ca2+ ?
13. :
) 0.1 (C27H46O),
5.0410-3 M ( ).
b) 0.5 (NH3) 0.5 M.
c) 393.6 (C2H4(OH)2) 9.087 M.
d) 1.0 (C3H7OH) 9.74 M
e) 325 (FeSO4) 1.810-6 M
( , ).
14. :
) 1.82 H2SO4
b) 1.910-4 NaCN 100 ( ).
c) 27 (C6H12O6) 500 .
d) 2.2 (CH2O) 5.5
e) 0.029 0.1 ( I2 20˚C).
15. :
) 69 (NaHCO3) 1 ( 0˚C
).
b) 583 H2SO4 1.5 ( ).
c) 120 NH4NO3 250 (
).
d) 0.86 NaCl 100 ( ).
e) 46.85 (C18H21NO3) 125.5 (C2H5OH).
16. 15.
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17. (95% H2SO4 ) 500 10% ?
18. 3% KOH 5.1 ?
19. HCl 45.0 37.21% HCl 1.19 /?
20. NaOH (97.0% NaOH ) 1.0 10% ? 10% 1.109 /3.
21. (Cd2+) 0.01/. ?
22. (C6H12O6) 75 /100. ?
23. 0.2 M Li2SO4 5.7 ?
24. 1.577 M AgNO3 1.22 /3. .
25. ( 1.07, H2SO4 10% ) 18.5 25˚C? 25˚C 0.99709 /.
26. 15% K2CrO4 1.129 /3. .
27. 25% H2, 20% CO 55% CO2 . ?
28. 20.0 , SiO2 80.0 (II), PbO. SiO2 PbO .
29. , CH3OH, , C2H5OH, , 50% , 30% , 20% .
30. 37.0% HCl 1.19 25˚C. 0.997 /. : (a) , (b) , (c) HCl H2O.
31. : (a) (b) , C12H22O11, 0.0677.
32. 10.00 M , HNO3, 1 0.05 M ?
33. 96.0 % 1.84 25˚C 8.0 1.5 M ? 25˚C 0.997 /.
34. 0.2 M , HNO3, 250 14.5 M ?
35. 0.75M HBr 1.0 0.33M ?
36. 3.5% KOH ( 1.012 /) 0.15 30.0 % ( 1.288 /)?
37. , . , , ( ) ( 10.8 /3) 0.89 215 .
38. HCl() 25˚C 1.26 . 2.5 1.5 M HCl?
39. Na2SO4 11.5 Na2SO410H2O 0.1 . .
40. 0.525 0.105 M 10.0 M . .
41. 0.75 H3PO4 35.08 P4O10. .
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42. 0.25 2.032 Na2CO310H2O. .
43. 0.05% (AgNO3) . 1 0.1M AgNO3?
44. 800 0.1% CaCl2, ? 0.3M ? .
45. H2SO4 (M=98 /) 250 0.3N ?(, .) ?
46. CaCl2 (M=111 /) 150 0.4M ? ?
47. KF (M=58 /) 500 2.5M ? ?
48. , 20 MgSO4 (M=120 /) 200 1.04 /. .
49. (+) 16 100. , 1.025 /.
50. 3 (H2SO4): 0.1M, 0.1N, 0.1%. .
