When sulfur dioxide reacts with nitrogen dioxide a mixture

Question

When sulfur dioxide reacts with nitrogen dioxide, a mixture of nitrogen monoxide and sulfur trioxide is formed.

so₂(g) + N0₂(g)  NO(g) + SO₃(g) K_p = 85.0 at 460^oC

Determine the equilibrium partial pressure for sulfur trioxide if the initial partial pressure of each reactant is 0.150 atm
and the initial partial pressure of each product is 2.00 atm.

Calculate the charge in pH when 0.30 mol H⁺ is added to 1.00 L of each of the following buffers :

(a) a 0.54 M solution of pyridine (py) containing 0.46 M pyH⁺

(b) a 0.60 M solution of aniline (an) containing 0.92 M anH⁺.

The equlibrium constant, K_c. for the following rcaction is 1.80x10^-2 at 698 K

2HI(g) H₂(g)+ I₂(g)

Calculate the equilibrium concentrations of reactant and products when 0.286 moles of HI are introduced into a 1.00 L vessel at 698 K.