Gas Equilibria Practice Problems14. What is the general equation for calculating Q?15. What is the difference between Q and K?16. Determine the equilibrium constant for the following reaction at 298 K.SO3(g) + H2O(g) → H2SO4(l)ΔG° = -90.5 kJ17. Given the reaction4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(g) a.Calculate the Kcvalue at a given temperature given that there are initially 0.0300 moles of both reactants in a 2.00L container, and the equilibrium concentration of N2is 1.96 x 10-3M.
b.Calculate the Kpvalue.c.How does the value of Kpchange if the reaction is reversed?d.How does the value of Kcchange if the reaction is halved?18. This question deals with the equilibrium (all gases): 2NO2 + 1/2O2↔N2O5If the set of equilibrium pressures at 300ºC are: N2O5= 4.0atm, O2= 16atm, and NO2= 2.0atm, what is the value of Kpat that temperature?What would happen to the value of Kpif the pressure of O2is doubled?a.Kpdoublesb.Kpis multiplied by 1.4c.Kpremains unchangedd.Kphalvese.Kpis divided by 1.419. Solid NH4Cl establishes the following equilibrium at 250ºC:NH4Cl(s) ↔NH3(g) + HCl(g)For which Kp= 0.090. When equilibrium is established, what is the pressure of NH3?
20. At some temperature, Kc= 5.5 for the exothermic, heterogeneous equilibriumSi(s) + 2Cl2(g) ↔SiCl4(g)3.0mol of Si and 1.0 mol of Cl2and 6.0 mole of SiCl4are placed in a 1.0 L container.a. What is Q numerically?b. which way will the proceed?-To the left. -To the right.21. Fill in the following table: Le Chatleier’s PracticeFor the reaction: Ni(s) + 4CO (g) = Ni(CO)4(g) ΔHº = -161 kJ/mol of rxnChange:Reaction Proceeds?QuantityEffects on QuantityRaise TemperatureNi(s)Remove Ni(CO)4(g) KcAdd Ni(s)Ni(CO)4(g)Add CO(g)CO(g)Lower TemperatureKcDecrease container volumeKc22. What is the only Le Chatelier change we can make that will affect the Kcvalue?
23. Does the amount of nickel at equilibrium effect our Kcvalue?24. Fill in the tableCommon Acids and BasesStrong AcidsStrong BasesWeak AcidsWeak Bases1. HBr1.Ca(OH)21. EVERYTHING ELSE1. EVERYTHING ELSE2.HCl2.CsOH3.HClO43.KOH4.H2SO44.LiOH5.HNO35.RbOH6.HI6.NaOH7.Mg(OH)28.Ba(OH)2