:
() b().
:
∆G = b G B G = 0 G = b G B. (3.20)
, , .. () ( ). . () .
(3.16) (3.20):
a(G o+ RT ln A)=b(G oB+ RT ln B).
:
∆G =b(G oB+ RT ln p B)−a(G o+ RT ln p A)=0,
− ():
, , :
∆ G o p=−RTlnKp. (3.21)
, , .
, N2() + 3H2() 2NH3()
.
, (3.17) (3.21):
. (3.22)
(3.24) , . .
, , (), , , .
,
,
, [N2], [NH3], [H2] - , , /.
,
, (3.23)
R − , 0,082 ×/×; Dn− : Dn=(b) − .
, N2()+3H2() 2NH3()
Dn=2(1+3)=2 = (RT)-2.
( ) , = .
, N2() + O2() 2NO(), = .
() , , . ,
|
|
MgCO3() MgO() + CO2()
= , K =[CO2].