(3) For the equilibrium: 2 SO2 (9) + O2(g) = 2 SO3(9) The equilibrium constant Kc is 2.8 x 102 A vessel of volume 1 dm'at 1000 K is filled with 0.5 mol O2. 0.1 mol O2, and 0.7 mol SO. (a) Is the mixture at equilibrium? (b) If the mixture is not at equilibrium, in which direction will the reaction proceed? (4) When a metal of molar mass 207 g mol-1 is deposited by electrolysis, a current of 0.06 A flowing for 66 minutes increases the mass of the cathode by 0.254 g. What is the charge on the cation of this metal? (5) A solution containing 74.5 g of KCl dissolved in 200 cm of water was prepared. 25 cm of this solution was then extracted and diluted in water to prepare a new solution with a total volume of 500 cm. What is the concentration, in mol dm, of the diluted solution