10. 2 SO262) + O28) 2 SO: AH = -197.8 kJ The reaction above is an important step in the production of sulphuric acid. An increase in which of the following will increase the ratio of Ox/S0xd at equilibrium? a) b) c) d) Pressure only Temperature only Both temperature and pressure Neither pressure nor temperature 11. Reactants A and B are mixed, each at a concentration 0.80 mole per litre. They react slowly, producing C and D. Alaq) + Blag) Caq) + D(aq) When equilibrium is reached, the concentration of C is measured and found to be 0.60 mol/L. The value of the equilibrium constant for the reaction must be: a) 0.60 b) 0.75 c) 0.80 d) 1.77 e) 9.0 12. N2(g) + 3 H2(e) > 2 NH3(e) What is the equilibrium expression for the above reaction? a) K = [NH:1 b) K = 2[NH:1 [N][Hz] (N) [Hz] - = c) K = 2(NH3) 3[N] [H2] d) Ke = [NH ? [N][H]