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- Write the expression for Kc for the following reactions. Ineach case indicate whether the reaction is homogeneousor heterogeneous.(a) 3 NO1g2 ∆ N2O1g2 + NO21g2(b) CH41g2 + 2 H2S1g2 ∆ CS21g2 + 4 H21g2(c) Ni1CO241g2 ∆ Ni1s2 + 4 CO1g2(d) HF1aq2 ∆ H+1aq2 + F-1aq2(e) 2 Ag1s2 + Zn2+1aq2 ∆ 2 Ag+1aq2 + Zn1s2(f) H2O1l2 ∆ H+1aq2 + OH-1aq2(g) 2 H2O1l2 ∆ 2 H+1aq2 + 2 OH-1aq2Oligomeric proteins are common and commonly occur when binding a ligand. Consider a reaction where 2 molecules of A combine with B to form an A2B complex. No detectable AB complexes exist. Using your knowledge of equilibrium binding, show that the fraction of B bound (ie fraction of A2B from the total B) fits the following expression: fraction B bound = [?] 2 ?? + [?] 2Determine values of Kc from the values of Kp given a. 2NO(g) + O2(g) ⇌ 2NO2(g) Kp = 1.48 x 104 at 184K b. Sb2S3(s) + 3H2 ⇌ 2Sb(s) + 3H2S(g) Kp = 0.429 at 713K
- Some sulfuric acid is spilled on a lab bench. You can neutralizethe acid by sprinkling sodium bicarbonate on it and thenmopping up the resulting solution. The sodium bicarbonatereacts with sulfuric acid according to:2 NaHCO31s2 + H2SO41aq2¡Na2SO41aq2 +2 H2O1l2 + 2 CO21g2Sodium bicarbonate is added until the fizzing due to the formationof CO21g2 stops. If 27 mL of 6.0 M H2SO4 was spilled,what is the minimum mass of NaHCO3 that must be addedto the spill to neutralize the acid?From the data given below calculate the value of ΔS° for the reaction. T = 298.15 K. A(g) + 1B(g) ---> 1C(s) + D(l)ΔfH°/(kJ mol-1) -393.23 -44.71 -332.49 -284.45ΔfG°/(kJ mol-1) -392.07 -15.56 -197.3 -231.43Write the expression for Kc for the following reactions. Ineach case indicate whether the reaction is homogeneousor heterogeneous.(a) 3 NO(g) ⇌ N2O(g) + NO2(g)(b) CH4(g) + 2 H2S(g) ⇌ CS2(g) + 4 H2(g)(c) Ni(CO)4(g) ⇌ Ni(s)+ 4 CO(g)(d) HF(aq) ⇌ H+(aq) + F-(aq)(e) 2 Ag(s) + Zn2+(aq) ⇌ 2 Ag+(aq) + Zn(s)(f) H2O(l) ⇌ H+(aq) + OH-(aq)(g) 2 H2O(l) ⇌ 2 H+(aq) + 2 OH-(aq)
- The following equilibria were attained at 823 K:CoO(s) + H2(g) ⇌ Co(s) + H2O(g) Kc = 67CoO(s) + CO(g) ⇌ Co(s) + CO2(g) Kc = 490Based on these equilibria, calculate the equilibrium constantfor H2(g) + CO2(g) ⇌ CO(g) + H2O(g) at 823 K.The vapor-liquid reactive equilibria for ethyl lactate synthesis follows the expressionlog K = 7.893 – (2.4312 x 103)K/Tbetween 83.12 °C and 101.54 °C. What are the ΔH°rxn, ΔG°rxn, and ΔS°rxn at 85 °C?Ind. Eng. Chem. Res. 2008, 47, 5, 1453–1463Physical Chemistry: Show complete solution. For the reaction 2NaHSO4(s) ⇌ Na2S2O7(s) + H2O(g) ΔH° = 19,800 cal/moland ΔG°= 9000 cal/mol at 25°C. Assuming ΔH° to be constant, calculate thedissociation pressure of NaHSO4 at 700 K.
- The dissociation of HI at 723 K has an equilibrium constant of 2.0×10–2 (unitless). a) Calculate ΔrxnG for this process.b) Write the chemical reaction and associated equilibrium expression for this process.The value of ΔS° for the catalytic hydrogenation of acetylene to ethane, C2H2 (g) + 2H2 (g) → C2H6 (g) is __________ J/K∙ mol. A) -76.0 B) +440.9 C) -232.5 D) +232.5 E) +28.7calculate Kc for the reaction PCl5 = PCl3 + Cl2 at 500K, if at equilibrium moment 54% of PCl5 is dissolved, and the initial concentration of PCl5 was 1M