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Calculate the standard enthalpy and standard entropy change at 298 K for the following reaction: 2Fe(s) + 3/2O2(g) → Fe2O3(s) Given that the standard enthalpies of formation for Fe(s), O2(g), and Fe2O3(s) are 0 kJ/mol, 0 kJ/mol, and -826 kJ/mol respectively. Also, the standard molar entropy of Fe2O3(s) is 87.4 J/K/mol.

asked Feb 3 in Inorganic Chemistry by Jefferson313 (490 points)

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Calculate the standard enthalpy change for the following reaction involving liquids at 298 K: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)Given the standard enthalpies of formation of C2H5OH(l), CO2(g) and H2O(l) are −277.6 kJ/mol, −393.5 kJ/mol and −285.8 kJ/mol respectively.

asked Feb 3 in Chemical thermodynamics by YaniraBartle (310 points)

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Calculate the standard enthalpy change for the following reaction at 298 K:Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

asked Feb 3 in Quantum Chemistry by HectorShapir (730 points)

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Calculate the standard entropy change for the reaction: 2SO3(g) + O2(g) → 2SO4(g) Given the following standard entropies of formation: ΔS°f SO3(g) = 256.2 J/K mol ΔS°f O2(g) = 205.0 J/K mol ΔS°f SO4(g) = 296.8 J/K mol

asked Feb 3 in Inorganic Chemistry by WBFCharli644 (270 points)

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Consider the electrochemical cell with the following half-cell reactions: Fe3+ (aq) + e- → Fe2+ (aq) E° = +0.771 V and Cd2+ (aq) + 2e- → Cd (s) E° = -0.403 V What is the overall cell potential, Ecell, under standard conditions? Which species will be reduced at the cathode? Which electrode is the anode? Justify your choices using the given standard reduction potentials.

asked Feb 3 in ElectroChemistry by EdwardTier7 (390 points)

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Design a biodegradable polymer that can be used as a sustainable alternative to single-use plastic bags, and provide a detailed synthesis route for its production.

asked Feb 3 in Polymer Chemistry by XTFAnderson (290 points)

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Calculate the standard enthalpy change for the neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH), given the appropriate thermochemical equations and the following information:- Heat evolved during the reaction, Q = -58.35 kJ/mol- Moles of HCl used, n(HCl) = 0.05 mol- Concentration of NaOH solution, c(NaOH) = 2 M- Volume of NaOH solution used, V(NaOH) = 25.0 mL (assuming density of 1.00 g/mL)Show your calculations and include units in your final answer.

asked Feb 3 in Chemical thermodynamics by RetaStoddard (570 points)

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Calculate the standard entropy change for the following reaction at 298 K:CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l) Given the standard entropies of CH4(g), O2(g), CO2(g), and H2O(l) are 186.26 J/K/mol, 205.03 J/K/mol, 213.74 J/K/mol, and 69.95 J/K/mol respectively.

asked Feb 3 in Chemical thermodynamics by DolliePalmer (530 points)

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Calculate the standard enthalpy change for the vaporization reaction of 2.00 moles of water at 100°C and 1 atm pressure, given that the molar enthalpy of vaporization of water is 40.7 kJ/mol.

asked Feb 3 in Chemical thermodynamics by Madelaine706 (330 points)

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Calculate the standard electrode potential for the redox reaction where Ag(s) is oxidized by Cu2+(aq) to form Ag+(aq) and Cu(s) given that the standard reduction potential for Ag+(aq) + e- → Ag(s) is 0.80 V and for Cu2+(aq) + 2e- → Cu(s) is 0.34 V.

asked Feb 3 in Chemical thermodynamics by SheilaCrawfo (420 points)

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Calculate the standard enthalpy change for the dissolution of 10 g of NaOH in 100 mL of water at 25°C if the molar enthalpy of dissolution is -44.5 kJ/mol.

asked Feb 3 in Chemical thermodynamics by Eduardo04095 (490 points)

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Calculate the standard molar enthalpy change for the following reaction using quantum chemistry and compare it with the literature value: 2H2(g) + O2(g) -> 2H2O(g) Literature Value: -572 kJ/mol

asked Feb 3 in Quantum Chemistry by SuzanneTabor (390 points)

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Calculate the standard enthalpy of formation of methanol, CH3OH (l), given that the standard enthalpy of combustion of methanol is -726.4 kJ/mol and the standard enthalpy of formation of carbon dioxide and water are -393.5 kJ/mol and -285.8 kJ/mol, respectively.

asked Feb 3 in ThermoChemistry by Mckinley52S2 (330 points)

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Calculate the standard Gibbs free energy change for the following electrochemical reaction at 25°C:Cu(s) + 2Ag⁺(aq) → Cu²⁺(aq) + 2Ag(s) Given: E°cell = 0.46 V, F = 96,500 C/mol, R = 8.314 J/K·mol, and the standard reduction potentials at 25°C are Cu²⁺(aq) + 2e⁻ → Cu(s) (E°red = 0.34 V) and Ag⁺(aq) + e⁻ → Ag(s) (E°red = 0.80 V).

asked Feb 3 in ElectroChemistry by JulianeGlynn (450 points)

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1 answer 39 views

Calculate the standard enthalpy change for the reduction of iron(III) oxide to iron using the following balanced chemical equation:Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)Given that the standard enthalpy change of formation for Fe2O3(s) is -824.2 kJ/mol, the standard enthalpy change of formation for CO2(g) is -393.5 kJ/mol, and the standard enthalpy change of formation for Fe(s) is 0 kJ/mol. Assume all reactants and products are in their standard states.

asked Feb 3 in ThermoChemistry by DewayneDto26 (590 points)

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Calculate the standard Gibbs free energy change for the electrochemical cell reaction using the given half-reactions:Cu^2+(aq) + 2 e^- → Cu(s) E° = +0.34 VSn^4+(aq) + 2 e^- → Sn^2+(aq) E° = +0.15 VConstruct the cell diagram and identify the anode and cathode. Determine the overall cell potential and whether the reaction is spontaneous.

asked Feb 3 in ElectroChemistry by ElijahGlaspi (470 points)

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1 answer 41 views

Calculate the standard enthalpy change for the fusion of 50 grams of ice at -10°C to liquid water at 10°C. Given the enthalpy of fusion of ice is 6.01 kJ/mol and the specific heat capacity of water is 4.184 J/g°C.

asked Feb 3 in Chemical thermodynamics by StarlaStroud (410 points)

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Calculate the standard enthalpy change for the reaction: C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(l), given the following standard enthalpies of formation: ΔHf°[C2H5OH(l)] = -277.69 kJ/mol, ΔHf°[CO2(g)] = -393.51 kJ/mol, ΔHf°[H2O(l)] = -285.83 kJ/mol.

asked Feb 3 in Chemical thermodynamics by MaryPhilips4 (450 points)

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Calculate the standard enthalpy change (∆H°) for the reaction between 50.0 mL of 0.100 M hydrochloric acid (HCl) and 50.0 mL of 0.100 M sodium hydroxide (NaOH), given that the temperature change was -5.01°C and the specific heat capacity of the solution is 4.18 J/g°C. The balanced chemical equation for the reaction is:HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)Note: Assume the density of the solutions is 1.00 g/mL and that the specific heat capacity of the solutions is the same as that of water.

asked Feb 3 in Chemical thermodynamics by RosalinePnd (270 points)

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Calculate the standard enthalpy change for the formation of water vapor (H2O (g)) from its elements, given that the standard enthalpy of formation of hydrogen gas (H2(g)) is -241.8 kJ/mol and the standard enthalpy of formation of oxygen gas (O2(g)) is 0 kJ/mol.

asked Feb 3 in Chemical thermodynamics by IndianaQ610 (750 points)

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