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Calculate the standard enthalpy change of the following chemical reaction at 298 K given the following bond energies: 2H2(g) + O2(g) --> 2H2O(l) Bond energies: H-H: 432 kJ/mol O=O: 498 kJ/mol O-H: 464 kJ/mol

asked 1 day ago in Physical Chemistry by EthanC574154 (310 points)

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Calculate the standard enthalpy change (in kJ/mol) for the following chemical reaction at 298 K:2SO2(g) + O2(g) → 2SO3(g)Given the standard enthalpies of formation (∆Hf°) at 298 K for SO2(g), O2(g), and SO3(g) are -296.8 kJ/mol, 0 kJ/mol, and -396.0 kJ/mol, respectively.

asked 2 days ago in Physical Chemistry by PhoebeHendon (390 points)

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Calculate the standard cell potential of the following electrochemical cell: Ag(s) │ AgCl(s) │ Cl^-(aq, 0.040 M) ‖ Cu^2+(aq, 0.020 M) │ Cu(s) at 298 K. The reduction potential of AgCl/Ag couple is +0.22 V and the reduction potential of Cu^2+/Cu couple is +0.34 V.

asked 2 days ago in Physical Chemistry by DoreenBurrou (470 points)

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Calculate the standard cell potential of the following electrochemical cell at 298 K, given the half-reactions and their standard reduction potentials in brackets:Cu(s) | Cu^2+(0.001 M) || Ag+(0.1 M) | Ag(s)

asked 2 days ago in Physical Chemistry by VirgilioGree (470 points)

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Calculate the standard cell potential (E°) for the following electrochemical cell:Zn(s) | Zn2+(aq, 0.100M) || Cr3+(aq, 0.050M) | Cr(s)Given: E°cell (Zn2+/Zn) = -0.76 VE°cell (Cr3+/Cr) = -0.74 V

asked 2 days ago in Physical Chemistry by CynthiaOddo (470 points)

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Calculate the rate constant at 300 K for a gas phase reaction with a rate of 0.025 M/s and an initial concentration of 0.10 M. The reaction is second order in the concentration of reactants.

asked 2 days ago in Physical Chemistry by TatianaDowli (550 points)

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Calculate the partition function for a system of 300 molecules occupying an energy level of 10 J at a temperature of 300 K using the classical harmonic oscillator model.

asked 2 days ago in Physical Chemistry by LoriMacdouga (610 points)

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Calculate the partition function for a system of 10 molecules of a monoatomic gas confined to a 1-dimensional box of length 1 nm at a temperature of 300 K using the classical and quantum mechanical methods. Then, compare the results obtained and explain the discrepancies observed.

asked 2 days ago in Physical Chemistry by JuliMighell (410 points)

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Calculate the partition function (q) and the Helmholtz free energy (A) of an ideal gas containing 2 moles of particles at a temperature of 300 K, assuming the gas is in the canonical ensemble.

asked 2 days ago in Physical Chemistry by GitaNhp62295 (510 points)

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How does changing the temperature of a chemical reaction affect the activation energy barrier in the reaction? Use computational chemistry and molecular modeling to calculate the activation energy barriers for the same reaction at different temperatures and explain the change in activation energy with temperature.

asked 2 days ago in Physical Chemistry by BryceFawsitt (350 points)

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How does changing the concentration of a catalyst affect the rate of the catalyzed reaction? Provide experimental data to support your answer.

asked 4 days ago in Physical Chemistry by RickieJuan39 (530 points)

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What is the effect of changing the anion of an ionic liquid on its physical properties?

asked 4 days ago in Physical Chemistry by MurielC91559 (450 points)

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What parameters affect catalytic activity and selectivity in the hydrogenation of ethylene to ethane using a platinum-based catalyst?

asked 4 days ago in Physical Chemistry by VickyMilner (590 points)

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What is the effect of different types of catalysts (such as homogenous and heterogeneous catalysts) on the rate of a specific reaction, and how can this be practically applied in industrial processes?

asked 4 days ago in Physical Chemistry by VetaFunk053 (530 points)

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What is the effect of catalysts on the rate of a chemical reaction in terms of activation energy? And, using the Arrhenius equation, calculate the activation energy for the catalyzed and non-catalyzed reactions and compare the two values.

asked 4 days ago in Physical Chemistry by GavinBabin17 (530 points)

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What are the vibrational frequencies of carbon dioxide and how do they relate to the molecular geometry of the molecule?

asked 4 days ago in Physical Chemistry by NaomiWilloug (310 points)

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What is the molecular structure and geometry of carbon dioxide according to quantum mechanics principles?

asked 4 days ago in Physical Chemistry by LPFVirgie959 (590 points)

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What are the molecular vibrations of carbon dioxide and how do they contribute to its infrared spectrum?

asked 4 days ago in Physical Chemistry by DongCarrier (670 points)

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What is the vibrational frequency of carbon dioxide (CO2) using infrared spectroscopy?

asked 4 days ago in Physical Chemistry by EttaMullah8 (890 points)

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What is the molecular structure of caffeine and how can its structure be determined using spectroscopy and vibrational analysis?

asked 4 days ago in Physical Chemistry by RBSJonna0719 (330 points)

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