- (-).
(), (Red)
+ne=Red1
Red2+ne=
2FeCl3+SnCl2=2FeCl2+SnCl
2Fe+3=2Fe+2
Sn+2=Sn+4
Fe+3, Sn+2. 2 . 2 -. (Fe+3, Sn+4) (Fe+2, Sn+4).
2 -. , , . -, , 22:
1.
22+2=22
2.
22+2=2+2+
- -.
- , (Pt, Au, Vo, , . 2 - :
1. ;
2. .
1. , Pt, , FeCl3 FeCl2/
2. , Pt, .
- , .
- , 1 , .
, - -
=0+(RT/nF)*ln a(.)/(.)
- F- =96500 /
:
=0+(96500/n)*ln (.)/(.)
t , . , (),
lnK=(nF/RT)*E0
E0=(RT/nF)*ln
=1-2>0, ;
=1-2<0, ;
=1-2=0, .
, , , .
|
|
G=-nFE
G0=-nFE0 , G <0, ; G>0- ; G=0- .