Question

1) Consider the reaction: X2(g)?2X(g). When a vessel initially containing 700torr of X2 comes to equilibrium at 298 K, the equilibrium partial pressure of X is 108torr . The same reaction is repeated with an initial partial pressure of 755torr of X2 at 700K ; the equilibrium partial pressure of X is 596torr .

Find ?H? for the reaction.

2) Consider the following reaction:
I2(g)+Cl2(g) ? 2ICl(g)
Kp= 81.9 at 25 ? C.
Calculate ?Grxn for the reaction at 25 ? C under each of the following conditions.

A) standard conditions:

?G?rxn = ____________ kJ

B) PICl= 2.60atm ;
PI2= 0.317atm ;
PCl2= 0.217atm .

?Grxn = ___________________ kJ