General Chemistry II Laboratory Manual, 2021 Revision 39 Questions: 1) When you set up the temperature probe using Capstone, you did not calibrate it to read the correct temperature. It's possible that the probe reads temperatures that are consistently off by 1 or 2°C. Why won't this affect your results for this experiment? Explain your answer.
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- CO(g)+2H2(g)⇌CH3OH(g) K = 2.18×102 at 340 K Calculate ΔrG for the reaction at 340 K in STANDARD CONDITIONS please Express your answer using three significant figures and include the appropriate units.can someone find the [OH-] at T hot, the Ksp at T hot, the delta G for T hot, the delta S and delta H and % error given the following values Temp Room: 20.1 deg Cel Temp Hot: 30.7 deg Cel pH Room: 12.78 pH Hot: 12.44 calculate the value given the following standard state entropies S f Ca(OH)2 (aq) = -74.6 J/mol K S f Ca(OH)2 (s)= 83.39 J /mol Kdistinguish between the circumstances for the use of nRln(V2/V1) and Cvln(T2/T1) in calculating change in S
- When nitric acid is produced industrially, nitrogen monoxide, NO, is first formed at high temperature. Bakefetr reacts NO on cooling further with oxygen to nitrogen dioxide: 2 NO(g) + O2 ⇌ 2 NO2 (g) Table 1: Thermodynamic data at 25°C. Bond ΔfHom Som Cop,m NO(g) 90.25 210.76 29.34 O2(g) 0.00 205.14 29.36 NO2(g) 33.18 240.06 37.20 1) Calculate (with all relevant intermediate calculations) the standard reaction Gibbs free energy, ΔrG25o, for reaction (1) at 25°C from the data in Table 1 2) Calculate (with all relevant intermediate calculations) the equilibrium constant K25, for reaction (1) at 25°C. 3) Industrially, however, the reaction does not proceed at 25°C but at 500°C. Therefore, calculate (with all relevant intermediate calculations) the standard reaction Gibbs free energy, ΔrG500o, for reaction (1) at 500°C under the assumption that the standard molar heat capacities, Cop, in Table 1 are independent of temperature in the interval [25°C, 500°C]For the reaction C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(g), ΔrU⦵ = −1373 kJ mol−1 at 298 K. Calculate ΔrH⦵.Compound Δ?∘f (kJ/mol)ΔGf∘ (kJ/mol) A +387.7+387.7 B +600.4+600.4 C +402.0+402.0 Use the data given here to calculate the values of Δ?∘rxnΔGrxn∘ at 25 ∘25 ∘C for the reaction described by the equation A+B↽−−⇀C A+B↽−−⇀CA+B↽−−⇀C Δ?∘rxn=ΔGrxn∘= kJkJ If Δ?∘rxnΔHrxn∘ and Δ?∘rxnΔSrxn∘ are both positive values, what drives the spontaneous reaction and in what direction at standard conditions? The spontaneous reaction is enthalpy-driven to the left. enthalpy-driven to the right. entropy-driven to the right. entropy-driven to the left.
- Thermodynamics Quantities for Selected Substances at 298.15 K (25⁰C) Substance ∆H⁰f (kJ/mol) ∆G⁰f (kJ/mol) S (J/K-mol) Carbon C2H2(g) 226.7 209.2 200.8 CO2(g) -393.5 -394.4 213.6 Hydrogen H2(g) 0 0 130.58 Oxygen O2(g) 0 0 205.0 H2O(l) -285.83 -237.13 69.91 6. What is the ∆S⁰ of the combustion of acetylene in the presence of excess oxygen yields carbon dioxide and water: 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l) in J/K?For the reaction 2 A --> 2 B + C , Kc = 4.3. If a 2.00 L vessel contains 1.5 mol A,. 2.60 mol B and 3.00 mol C. Determine the value of Qc.Thermodynamics Quantities for Selected Substances at 298.15 K (25⁰C) Substance ∆H⁰f (kJ/mol) ∆G⁰f (kJ/mol) S (J/K-mol) Carbon C2H2(g) 226.7 209.2 200.8 CO2(g) -393.5 -394.4 213.6 Hydrogen H2(g) 0 0 130.58 Oxygen O2(g) 0 0 205.0 H2O(l) -285.83 -237.13 69.91 1. What is the ∆S⁰ in the combustion of ethene in the presence of excess oxygen yields carbon dioxide and water: C2H2(g) + 3O2(g) → 2CO2(g) + 2H2O(l) in J/K?
- Calculate the Ksp for the dissociation of solid barium nitrate in water at 25.0 oC. The ΔGo for Ba(NO3)2(s) = -797 kJ/mole. Ba(NO3)2(s) ↔ Ba+2(aq) + 2NO3-1(aq) Group of answer choices 4.47x10-23 5.06x10-4 1.97x103 5.22x10-40 2.24x1022 0.992Calculate Ksp for the salt NaCl at 25°C. Substance ΔGf°(in kJ/mol) Na+(aq) –262.0 Cl–(aq) –131.0 NaCl(s) -383.6What is ΔG°rxn in kJ/mol for the following reaction at 406 Kelvin? Please report 2 decimal places, without units. 2NO(g) + Cl2(g) → 2NOCl(g) Substance: NO(g) Cl2(g) NOCl(g) ΔH°f (kJ/mol) at 298 K 90.29 0 51.71 ΔG°f (kJ/mol) at 298 K 86.60 0 66.07 S°(J/K • mol) at 298 K 210.65 223.0 261.60