.
,
,
1000 .
: /.
5. , 200 3 0,1 .
: V - = 200 c3 | . |
= 0,1 ,
m KOH = 0,1 M KOH = 0,156 = 5,6 ,
:
= 39 + 16 + 1 = 56 /.
, .
: = 0,028 /3.
6. 3,42 %- (122211).
: | |
? |
= ,
m m ;
(342 / 18 /).
(3,42 %- ).
, 100 3,42 122211,
m = 100 3,42 = 96,58 .
= .
: = 0,00186.
4HCl() + O2() = 22() + 2l2()
: | : | |||
D r Ho(298 K) ? D rS o(298 K) ? | ||||
D rH o(298 K) = [2D f Ho(298 K, 2()) + 2D f Ho(298 K, Cl2())]
[4D fH o(298 K, Cl()) + D fH o(298 K, 2())];
D rS o(298 K) = [2 S o(298 K, 2()) + 2 S o(298 K, Cl2())]
[4 S o(298 K, Cl()) + S o(298 K, 2())],
D rH o(298 K, ) S o(298 K, ) , :
4HCl() | + 2() | = 22() | + 2l2() | |
D rH o(298K) / | 4(-92,3) | 2(-241,84) | ||
S o(298 K), /() | 4(186,8) | 2(188,7) | 2(222,9), |
:
D rH o(298 K) = 2(241,84) 4(92,3) = 114,48 ;
∆ rS o(298 K) = (2188,7 + 2222,9) (4186,8 + 205) = 129 /.
: D rH o(298 K) = 114,48 , D rS o(298 K) = 129 /.
2. (24)
1410,8 /. .
: D flH o(298 K, C2H4()) = = 1410,8 / | 1 : |
D fH o(298 K, C2H4()) ? |
1C2H4() + 32() = 22() + 22();
D flH o(298 K) = 1410,8 /.
1 2() 2() .
,
D flH o(298 K) = D rH o(298 K) = 1410,8 .
D fH o(298 K, C2H4()) :
|
|
D rH o(298 K) = 2D fH o(298 K, 2()) + 2D fH o(298K, 2())
D fH o(298 K, 24()) 3D fH o(298 K, 2()).
D fH o(298 K, 24()) = 2D fH o(298 K, 2()) +
+ 2D fH o(298K, 2()) D rH o(298K) 3D fH o(298K, 2()).
(2() 2()) :
D fH o(298 K, 24()) = 2(393,5) +
+ 2(285,8) (1410,8) = 52,2 /.
: D fH o(298 K, 24()) = 52,2 /.
3. Fe2O3() :
Fe() +1/2O2() = FeO(), D rH o(298 K, 1) = 264,8 . (4.1)
4FeO() + O2() = 2Fe2O3(), D rH o(298 K, 2) = 585,2 . (4.2)
: | 1 Fe2O3() . |
D rH o(298 K) |
Fe2O3() Fe() O2():
2Fe() + 3/2O2() = Fe2O3(). (4.3)
(4.1) (4.2) (4.3). (4.1) (4.2), 2 (4.1) 2 (4.2):
2Fe() + O2() + 2FeO() + ½O2() = 2FeO() + Fe2O3().
(4.3):
2Fe() + 3/2O2() = Fe2O3().
(4.3) (4.1) (4.2):
D rH o(298 K, 3) = 2D rH o(298 K, 1) + ½D rH o(298 K, 2) =
= 2(-264,8) + ½(-585,2) = 822,2 .
(4.3) 1 Fe2O3 ,
D fH o(298 K, Fe2O3) = 822,2 /.
: D fH o(298 K, Fe2O3) = 822,2 /.
: = 60 / ) 1 = 320 , 2 = 360 ) = 298 , = 48/ | ) = ; = 1,09, 103 , =101,09 = 12,3 . |
) ? ) ? |
: , = 1 | CO2() + C() <=> 2CO(), . |
? |