2 F 3+ + 2 I = 2 F 2+ + I 2
50 0,03 Fel3 0,03 KI, . . 4 100 , 50 .
20 10 . 0,015 Na2S2O3. - . . .
20 10 . 20 3- ..
, 2- , .
1. :
V 1 - , , ; V 2 - , .
2. Fe2+ 2 
.
Fe3+ FeCl3 Fe2+:
= 0,015 .
4. - :
= 0,015 .
| , . | Na2S2O3 | |||
.
1. ? .
2. ? ?
3. . .
4. :
) N2 + 32↔ 2N3, D < 0;
) 2 + I2 ↔ 2I, D < 0;
) 32 ↔ 23, D > 0;
) Zn2+ + 2S ↔ ZnS + 2+;
) 3 ↔ + 2, D > 0.
(/)
| H2SO4 | HNO3 | HCl | NaOH | KOH | NH3 | |
| 5 | 1,033 | 1,026 | 1,023 | 1,052 | 1,044 | 0,977 |
| 10 | 1,067 | 1,054 | 1,043 | 1,110 | 1,090 | 0,958 |
| 15 | 1,102 | 1,084 | 1,073 | 1,162 | 1,138 | 0,940 |
| 20 | 1,140 | 1,115 | 1,098 | 1,220 | 1,187 | 0,923 |
| 25 | 1,178 | 1,147 | 1,124 | 1,272 | 1,236 | 0,907 |
| 30 | 1,219 | 1,180 | 1,149 | 1,329 | 1,288 | 0,892 |
| 35 | 1,260 | 1,215 | 1,174 | 1,380 | 1,341 | 0,880 |
| 40 | 1,303 | 1,246 | 1,198 | 1,430 | 1,394 | |
| 45 | 1,348 | 1,278 | 1,478 | 1,452 | ||
| 50 | 1,395 | 1,310 | 1,510 | |||
| 55 | 1,445 | 1,339 | ||||
| 60 | 1,498 | 1,366 | ||||
| 65 | 1,553 | 1,392 | ||||
| 70 | 1,610 | 1,414 | ||||
| 80 | 1,727 | 1,452 | ||||
| 90 | 1,815 | 1,482 | ||||
| 100 | 1,831 | 1,513 |
|
|
|
. I.
- .
I 020100.62 .
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