Question

16. For the system CO + CO2(g) → CaCO(s) the equilibrium constant expression is a. [CO] b. 1/[CO] c. COCO/CaCO, d. Cacos/CaoCO 17. The value of K, for the reaction 2NOH). N204) is 1.52 at 319 K. What is the value of ko at this temperature for the reaction N04() → 2NOR ? b. 1.23 c. 5.74 x 10 d. 0.658 18. The value of Ke for the reaction C() + COX() -----2CO(g) is 1.6. What is the equilibrium concentration of CO if the equilibrium concentration of CO2 is 0.50 M? 0.89 d. 0.75 a b. 0.80 0.31 19. Consider the reaction below: 250g) ------ 2802(g) + O2(g), AH° = +198 kJ All the following changes would shift the equilibrium to the left except one. Which one would not cause the equilibrium to shift to the left? a removing some SO3 c. increasing the container volume b. decreasing the temperature d. adding some SO2 20. For which of the following reactions is equal to Ke? a N2O(g) -→ 2NO(g) c. H2(g) + Cl2(g) → 2HCl(g) b. d. 250 (8) ► 2SO2(g) + O2(g) C(s) + CO2(g) → 2CO(B) PART II (8 points each) Please show all your work. 21. What is the boiling point in °C) of a solution prepared by dissolving 11.5 g of Ca(NO3)2 (formula weight = 164 g/mol) in 150 g of water? (K) for water is 0.52°C/m) 22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1. of solution. The osmotic pressure of this solution is 0.750 atm at 25.0°C. What is the molecular weigh the unknown solute (R = 0.0821 L atm/K mol)?

Answer 1

when any type of eaction is in form of Aat Bb MCtyD then equiibim and if a constant iA, K- eautant or prodyct is prtent in solid form, its autivity fa considler ed as40, Caco3(s) CaDCo (.) Cco2