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GENERAL CHEMISTRY 2 : Chemical Equilibrium and Le Chatelier's Principle !!!

Please answer (with solutions) *answer A, B, C & D*

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D. For the reaction, nolong s eCH(g)+ 3H2(g) = CH12(g) + heat determine the direction (forward, reverse, no change) the equilibrium will shift as a result of the following changes: increasing the concentration of H2 addition of Ar 0o removal of C6H12 19 increasing the temperature 20. decreasing the pressure by increasing the volume of the container enseggs oned sispulnos all istori no bios ent 10 1 8 sbie Iron ent no able fron ent ng nil epnario ert brie inuo bris neconbyrd s gasol

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3. Concentration of SO3 is decreased + Concentration of Oz is decreased 5. SO2 is added TIVITOA THBOUTS B. Effect of Changing the Pressure and Volume. Predict whether the equilibrium for the following reactions would shift forward, reverse, or no change when the pressure is increased. 2CO(g) + 02(g) = 2CO2(9) lenora entied (803M) vonstagmoO ghimsel 2NO(g) = N2(g) + 02(9) at N204(9) - 2NO2(9) enoltulbe auosupe mandi Ni(s) + 4CO(g) = Ni(CO)4(9) 10. N2(g) + 3Hz(g) - 2NHariBO onsupe bledleeash os due C. Effect of Changing the Temperature. What would be the effect of increasing the temperature on each of the following systems at equilibrium? Will the equilibrium shift forward or reverse? 11. 2SO2(g) + 02(g) = 2SO3(9) OT 27WAH = -198 kJ/mol 12. PCIs(g) = PCla(g) + Cl2(g) AH = 92.5 kJ/mol 13 H2 (g ) + 12(9) = 2HI(g ) AH = -9.45 kJ/mol 14. 2NOCI(g) = 2NO(g) + Cl2(g) AH = 75 kJ/mol 15. C(s) + H20(g) = CO(g) + H2(9) AH = 131 kJ/molo arosela la

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B. Solve the following completely: 1. At 500 K, the following equilibrium is established: 2NO(g) + Clz = 2NOCI(g) S An equilibrium mixture of the three gases has partial pressures of 0.095 atm, 0.171 atm and 0.28 atm for NO, Cl2, and NOCI, respectively. Calculate the equilibrium constant for the reaction at 500 K. Silneorico ant to simi 2. At 100 C, Kp = 2.39 for the following reactions is einsloser SO2Clz(g) - SO2(g) + Clz(g) eaghendo Inslengo mundiups In an equilibrium mixture of the three gases, the partial pressures of SO2Cl2 and SO2 are 3.31 atm and 1.59 atm, respectively. What is the partial pressure of Cl2 in the equilibrium mixture? eleven bas binwot flied 5 herdheisenp e (e)foubong to bisly ort .b Activity 3. LE CHATELIER'S PRINCIPLE A. Effect of Changing the Concentration. Consider the following equilibrium: 2502(g) + Oz(g) - 2SO:(g) one piswiot ent to esist ed to enoughinsondo enT li! How will each of the following changes in concentration affect an equilibrium mixture of the three gases? Will the direction of the equilibrium shift forward, reverse or no change? 1. Oz is added 2. SO2 is removed

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