)
SO2↑
Na2S2O3 + 2HCl → 2NaCl + H2S2O3 H2O
S↓
)
Na2S2O3 + 2AgNO3→ Ag2S2O3↓ + 2NaNO3
Ag2S2O3 + 2 → Ag2S↓ + 2SO4
,
:
2 N2S23 + I2 →2 NI + N2S46
.
I2 + 2 → 2 I- | 1 ;
2 S23 2- - 2 → S462- | 1 ;
f.= M1/z =
-
.. ,
N. B.! . 100 85
:
, IV ..
Natrii hydrocarbonas
Sodium hydrocarbonate*
NaHCO 3
) ( II)
Na+ + K[S(OH)6] Na[S(OH)6]↓ + K+
)
) ( I)
Zn(UO2)3(CH3COO)8 +Na++CH3COOH +9H2O→NaZn[(UO2)3(CH3COO)9] 9H2O↓ + H+
)
-
)
NaCO3 + HCl → NaCl + CO2↑ + H2O
)
t0
2 NaCO3 → Na2CO3 + CO2↑ + H2O
MgSO4 + Na2CO3 → MgCO3↓ + Na2SO4
) ( )
,
:
NaCO3 + HCl → NaCl + CO2↑ + H2O
.
f.= M1/z =
III .
Acidum boricum
Boric acid*
OH
H 3 BO 3 B OH
OH
:
:
1)
OH 25 25
B OH + 25 → 25 + 3 2
OH 25 25
|
|
|
2)
,
:
2 ͠ HO OH 2 2 Π 2
| | | |
+ HO B + → 2 - H + +3 2
| | | |
2 2 2 H 2
2 Π O 2 2 Π 2
| | | |
B - H + + NaOH → 2 - Na + + 2
| | | |
2 2 2 H 2
.
f.= M1/z =
Natrii tetraboras
Sodium Tetraborate *
Borax
Na 2 B 4 O 7 10 H 2 O
1) :
) ( III)
Na+ + K[S(OH)6] Na[S(OH)6]↓ + K+
)
) ( I)
Zn(UO2)3(CH3COO)8 +Na++CH3COOH +9H2O→NaZn[(UO2)3(CH3COO)9] 9H2O↓ + H+
)
Na2B4O7 + 2 Cl + 5 H2O → 4H3BO3 + 2 NaCl
)
)
,
:
Na2B4O7 + 2 Cl + 5 H2O→ 4H3BO3 + 2 NaCl
.
f.= M1/z =
II
..
| ( ) | |||
| Calcii cloridum Calcium loride* | Magnesii sulfas (Sal amarum) Magnesium sulfate* | Zinci sulfas Zinc sulfate* | |
| CaCl2 6 H2O | MgSO4 7 H2O | ZnSO4 7 H2O | |
