12) Calculate AS° (in JK' mol³) of the following reaction: 2NO; [g] → 2NO (g) +0₂ (g) = (S" JK mol: (0) 205 (NO)-211, (NO)=240) B) 136 (147) D) 172
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![12) Calculate AS° (in JK' mol³) of the following reaction:
2NO; [g] → 2NO (g) +0₂ (g)
=
(S" JK mol: (0) 205 (NO)-211, (NO)=240)
B) 136
(147)
D) 172](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd505ccdb-d31d-449e-82dd-9dc3d3223c88%2F3549cd02-030b-4840-b0c9-2d65eb3c97c3%2Frxeq5dr_processed.jpeg&w=3840&q=75)
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- C6H12O6(aq) + 6O2(g) 6CO2(g) + 6H2O(l)ΔH = –2802.7 kJ mol –1a) Write an expression for the equilibrium constant for this reaction.b) At equilibrium, the concentration of the reactants and products are determined as [CO2] = 0.30 M, [O2] = 0.040 M and [C6H12O6] = 0.065 M. Determine the value of the equilibrium constant (Kc) and predict the whether the products or reactants will be favoured at equilibrium.c) Given that the concentrations of the reactants and products at a particular time are [CO2] = 0.65 M, [O2] = 0.020 M and [C6H12O6] = 0.055 M, determine the reaction quotient (Qc). Compare the Kc and Qc values and predict the favoured direction of the reaction.d) Explain the effect on equilibrium of:i) Increasing temperatureii) Increasing pressureiii) Decreasing the concentration of oxygeniv) Increasing the concentration of carbon dioxidev) Adding a catalystPhotosynthesis in plants converts carbon dioxide and water into glucose (C6H1206) and oxygen according to the equation below. 6CO2 (g) + 6H20a → C6H1206 (s) + 602 (g) Substance СО2 (8) H20M C6H1206 (s) 02 (g) kJ AH°; (mol -393.5 -285.8 -1273.3 J H° mol. k 213.6 69.9 209.2 205.0 Calculate the AHº, ASº, and AGº. Is the reaction spontaneous at standard conditions?b) Determine the standard enthalpy change and std. Gibbs free energy change of reaction at 400 k for the reaction СO(g) +2H2(g) — CHОН (g) At 298.15 K, AH.co (0)= -26.41 kcal/mol, AH AG.co (9)= -32.8079 kcal/mol, AG cH,oh(9)= -38.69 kcal/mol, °.CH20H(9)= -48.08 kcal/mol, The standard heat capacity of various components is given by, CO = a + bT + cT² + dT³, where C, is in cal/mol-K and T is in K b x10² с х105 d x10° Соmponent CH3OH а 4.55 2.186 -0.291 -1.92 CO 6.726 0.04 0.1283 -0.5307 H2 6.952 -0.0457 0.09563 -0.2079
- b) Determine the standard enthalpy change and std. Gibbs free energy change of reaction at 400 k for the reaction Co(g) +2H2(g) → CH;OH (g) At 298.15 K, AH?.co )= -26.41 kcal/mol, AH?.CH,OH()= -48.08 kcal/mol, AG.co )= -32.8079 kcal/mol, AG.CH,OH(@)= -38.69 kcal/mol, The standard heat capacity of various components is given by. CS = a + bT + cT2 + dT³, where C is in cal/mol-K and T is in K |Component b x10 e x105 d x10° a -0.291 CH3OH CO 4.55 2.186 -1.92 6.726 0.04 0.1283 -0.5307 H2 6.952 -0.0457 0.09563 -0.2079(a) (c) HO OH 1. BH3 2. H₂O₂, NaOH 3. PCC 4. CH3MgBr 5. H3O+ workup Na₂Cr₂O7 H₂SO4, H₂OIf Q = 71.3 and Keg = 0.227, the reaction favors %3D (A) (B) Products Reactants
- For the reaction 4HCl(g) +O2(g) == 2Cl2(g) + H2O (g), Keq =889 at 480 o If 0.03 mole HCl , 0,02 mole O2 , 0.08 mole Cl2 and 0.07 mole H2O were mixed in 1 liter container, in what direction will the reaction proceed. Support your answer.J R = 8.314 mol·K F = 96,485 mol AG = AG° + RT · In(Q) ΔΕ ΔΕ-). In(Q) Half Reaction (Note: All given as reduction) E° (V) 02 (g) + 4 H"(aq) + 4 e 2 H20 (1) 1.229 |Z2 (s) + 2 e → 2Z° (aq) 0.426 3+ (aq) + 3 е A' → A (s) 0.292 2 H20 (I) + 2 e H2 (g) + 2 OH¯ (aq) - 0.828 G2+ (aq) + 2 e G (s) - 1.245 (aq) + 2 e¯ → M (s) - 1.893 Using a U-tube, a student sets up a non-spontaneous electrochemical cell with a battery connected to two carbon electrodes that are submerged in 1 MMZ2 (aq) solution (M is a metal and Z is an anion composed of the newly discovered element Z). Use the reference information given in the table above to answer the following three questions. Question 11 The electrode connected to the red wire (negative terminal on the battery) will... o produce bubbles and the pH will increase. o produce M (s) on the electrode and the pH will not change. o produce bubbles and the pH will decrease. o produce M (s) on the electrode and the pH will decrease. Question 12 The electrode…Calculate the value of the equilibrium constant, Ke, for the reaction Q(g) + X(g) 2 M(g) + N(g) given that Ke = M(g) = Z(g) 6R(g) = 2N(g) + 4 Z(g) 3 X(g) + 3 Q(g) = 9R(g) .116 Kel = 3.57 Kc2 = 0.524 Kc3 = 14.6
- The table below contains some mean bond energy data: Bond C-C 348 H-H N=N Mean bond energy /kJ mol| 436 944 (i) Balance the equation below for the formation of one mole of ammonia, NH3, from its elements. N2 + H2 NH3 AH = -38 kJmol" (ii)Use the data in the table above to calculate the bond energy of N - H bond in NH3 in the reaction given in (1) above. Comment on why the value obtained is referred to as 'mean bond enthalpy (ii) Use the equation below and data from the table to calculate a value for the C=C bond energy in ethene. Bond H-H C-H C-C 348 Mean bond energy /kJ mol 436 418 нн нн С—С + Н Нэнс- с н AH = -136 kJ mol нн н Ethene Ethane(a) A commercial 737 jet transporting 143 passengers and 5 crew members from Kansas City (MCI) to Baltimore (BWI) burned 11,800 lb (about 1700 gallons) of Jet A fuel en route. Jet A fuel is kerosine based, consisting primarily of CnH2n+2 hydrocarbons, with n =6 to 16, so the carbon:hydrogen ratio is close to 1:2. During this flight, how much CO2 was released into the atmosphere? Assume the combustion of the fuel was complete, so all the fuel was burned to form CO2 and H2O. Give both the mass of CO2 produced (in kg and in lbs) and the volume it would occupy at 298 K, 1 atm.(b) How much CO2 would be released into the atmosphere if those passengers and crew made the trip instead, in pairs, in hybrid cars at 40 miles per gallon. Assume the density of the gasoline is 0.75 kg L-1 and that carbon and hydrogen dominate the composition in a ratio of 1:2. The road trip is 1082 miles.5. Reaction Enthalpy. and calculate AH for the following chemical equations. AH (kJ/mol): HCN = 130.5, Cas(PO4)2=-4120.8, H3PO4--1288, SiCl=-640.1, SiO₂= -910.9, Mg0=-601.6, HCl--167.16 b) Ca₂(PO4)2(s) + H₂SO4(0)- 0 CaSO4(s) + H3PO4(1)
