Question

For the reaction 2SO2 (g) + O2 (g) <-----> 2SO3 (g)

At 350 K, the equilibrium concentrations were observed to be [SO2]= 0.075 M, [O2] = 5.5 x 10-2 M, and [SO3] = 0.50 M in a 2.00 literrigid container.

f) State whether the delta H, enthalpy change, for the reaction ispositive, negative, or zero. Justify your answer

g) In another reaction at 375 K, 14.56 grams of SO₃gas was placed into the 2.00 liter rigid container, after severalhours the total pressure of the container held to a constant valueof 5.20 atm. What is the partial pressure ofeach gas at equilibrium?

To help, I have found Kc = 8.1, Kp = 0.28, delta G = 3700 Joules,and that delta S is negative.