268
Chemical Equilibrium In Gases
24. For the reaction N 2 O 4 «=* 2NO 2 , it is known that the enthalpy of reaction is
+ 14.53 kcal, and that K f at 25.0°C is 0.143 atm. Calculate the value of K» at
0.0°C.
25. Derive a general mathematical equation that relates K v , equilibrium pressure
(P), and fraction (a) of A dissociated in the gaseous equilibrium A <=* B + C.
Assume that B and C come only from the dissociation of A, and that the
temperature remains constant.
Chemical Equilibrium In Gases
24. For the reaction N 2 O 4 «=* 2NO 2 , it is known that the enthalpy of reaction is
+ 14.53 kcal, and that K f at 25.0°C is 0.143 atm. Calculate the value of K» at
0.0°C.
25. Derive a general mathematical equation that relates K v , equilibrium pressure
(P), and fraction (a) of A dissociated in the gaseous equilibrium A <=* B + C.
Assume that B and C come only from the dissociation of A, and that the
temperature remains constant.