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Calculate the standard enthalpy of formation of Carbon dioxide (CO2), given the enthalpies of formation of Carbon monoxide (CO) and Oxygen gas (O2) as -110.5 kJ/mol and 0 kJ/mol, respectively.

asked Feb 3 in ThermoChemistry by MichelleHall (2.0k points)

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Calculate the standard enthalpy change for the reaction 2 SO2(g) + O2(g) → 2 SO3(g), given the following standard enthalpy of formation: ΔHf° (SO2) = -296.8 kJ/mol, ΔHf° (SO3) = -396.2 kJ/mol.

asked Feb 3 in Chemical thermodynamics by KyleWaddy213 (1.9k points)

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Calculate the standard enthalpy of formation of C2H6(g) given the following information: C(s) + O2(g) → CO2(g); ΔH° = -393.5 kJ/mol H2(g) + 1/2 O2(g) → H2O(l); ΔH° = -285.8 kJ/mol 2C(s) + 3H2(g) → C2H6(g); ΔH° = ?

asked Feb 3 in ThermoChemistry by LaunaRxf8120 (1.7k points)

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Calculate the standard free energy change, ΔG°, for the following redox reaction at 298 K:2Fe3+(aq) + 2I-(aq) → 2Fe2+(aq) + I2(s)The standard reduction potential values for Fe3+ and Fe2+ are -0.037 V and -0.44 V respectively, while the standard reduction potential value for I2 is 0.535 V.

asked Feb 3 in Chemical thermodynamics by EmilyForro67 (1.6k points)

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Calculate the standard free energy change for the redox reaction: 2Fe^3+(aq) + H2(g) --> 2Fe^2+(aq) + 2H^+(aq) Given the following standard reduction potentials: Fe^3+(aq) + e^- --> Fe^2+(aq) E° = +0.771 V 2H^+(aq) + 2e^- --> H2(g) E° = 0.000 V

asked Feb 3 in Chemical thermodynamics by QJXClarice2 (2.5k points)

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Calculate the standard enthalpy change (∆H°) for the neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) given the following information:- Balanced chemical equation: HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)- ∆H°f of NaCl(aq) = -407.3 kJ/mol- ∆H°f of H2O(l) = -285.8 kJ/mol- Heat capacity of the system, Cp = 4.18 J/g.K- Mass of the HCl solution used = 50.0 g- Concentration of HCl solution = 0.100 M- Volume of NaOH solution used = 100.0 mL- Concentration of NaOH solution = 0.200 MAssume that the specific heat of the solution is equal to that of water at 4.18 J/g.K and that the density o

asked Feb 3 in Chemical thermodynamics by HughNewquist (2.3k points)

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Can the mechanical properties of ceramics be improved for use in high-temperature applications by adjusting the manufacturing parameters, such as sintering temperature and time?

asked Feb 3 in Materials Chemistry by JeroldStonem (1.6k points)

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Calculate the potential difference between two silver electrodes that are placed into a solution containing 0.1M of AgNO3 and a current of 2.5 A is passed through the cell. The polarization caused by the passage of current through the cell is found to be 0.2 V. Given that the standard reduction potential of Ag+ to Ag is 0.80 V, calculate the equilibrium potential of the cell.

asked Feb 3 in ElectroChemistry by CatherineMcc (2.5k points)

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Calculate the polarization resistance of a copper electrode in a 0.1 M copper sulfate solution at 25°C, given that the current density is 10 mA/cm² and the exchange current density is 0.1 mA/cm². The Tafel slope is 30 mV/decade.

asked Feb 3 in ElectroChemistry by HeidiElmslie (1.8k points)

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Calculate the standard enthalpy change of the reaction below at 298K.Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)Given the following standard enthalpies of formation (ΔHf°):ΔHf°[Fe2O3(s)] = -824.2 kJ/molΔHf°[Fe(s)] = 0 kJ/molΔHf°[CO(g)] = -110.5 kJ/molΔHf°[CO2(g)] = -393.5 kJ/mol. Also, calculate the change in standard entropy of the system (ΔS°) and determine whether the reaction is spontaneous or not.

asked Feb 3 in Inorganic Chemistry by SvenJonathan (1.9k points)

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Calculate the standard enthalpy change for the vaporization of 25.0 grams of water at 100°C, given that the molar enthalpy of vaporization of water is 40.7 kJ/mol.

asked Feb 3 in Chemical thermodynamics by ErnestinaMus (1.9k points)

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Design a heat exchanger for a chemical process that requires the transfer of heat from a hot stream containing molten sodium at 1100°C to a cold stream containing water at 25°C. The hot stream inlet flow rate is 1000 kg/hr, and the cold stream outlet temperature should be limited to a maximum of 70°C. The heat transfer coefficient for the tubeside and shellside is 1000 W/m²K and 500 W/m²K, respectively. The design should minimize the size and cost of the heat exchanger while meeting the thermal requirements of the process.

asked Feb 4 in Chemical engineering by MagdaMeares (1.8k points)

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Calculate the standard enthalpy change for the neutralization of 50 mL of 0.1 M hydrochloric acid with 50 mL of 0.1 M sodium hydroxide at a constant temperature of 25°C, given that the specific heat capacity of the resulting solution is 4.18 J/g°C and its density is 1 g/mL.

asked Feb 3 in Chemical thermodynamics by WyattBriones (1.9k points)

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Calculate the standard enthalpy change for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) to form sodium chloride (NaCl) and water (H2O) when 50.0 mL of 1.0 M HCl reacts with 50.0 mL of 1.0 M NaOH at 25°C.

asked Feb 3 in Chemical thermodynamics by VioletteM27 (2.1k points)

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What is the effect of changing the properties of polymer-based materials, such as molecular weight and temperature, on the quality and mechanical properties of 3D printed parts?

asked Feb 3 in Polymer Chemistry by DannielleEdd (1.8k points)

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Calculate the standard electrode potential for the oxidation of Fe2+ ions to Fe3+ ions using the half-reactions and their respective standard electrode potentials. Show the balanced chemical equation for the overall reaction and determine if the reaction is spontaneous or non-spontaneous at standard conditions.

asked Feb 3 in Chemical thermodynamics by GarnetFjo447 (1.8k points)

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Calculate the standard electrode potential for the following redox reaction in acidic medium using the standard reduction potentials given below:Fe2+(aq) + MnO4-(aq) + H+(aq) → Fe3+(aq) + Mn2+(aq) + H2O(l)Standard reduction potentials:Fe3+(aq) + e- → Fe2+(aq) Eo = +0.77 VMnO4-(aq) + 8H+(aq) + 5e- → Mn2+(aq) + 4H2O(l) Eo = +1.51 V

asked Feb 3 in Chemical thermodynamics by ModestaDavey (1.6k points)

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Calculate the standard enthalpy change for the reaction between 50 ml of 0.2 M HCl (aq) and 50 ml of 0.2 M NaOH (aq) at 25°C, given that the specific heat capacity of the combined solution is 4.18 J/g °C and the density of the combined solution is 1.0 g/mL.

asked Feb 3 in Chemical thermodynamics by SelinaOmar8 (2.0k points)

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How does changing the ligand in a coordination compound affect the compound's properties, and how can it be characterized using spectroscopic techniques?

asked Feb 3 in Coordination Chemistry by MillaFredric (1.5k points)

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Design a continuous stirred-tank reactor (CSTR) for the exothermic reaction of A + B → C with a rate constant of 0.05 L/mol/min. The reactor should produce a minimum of 500 g of C per minute, while maintaining a conversion of at least 90%. The feedstream of A and B is available with a flow rate of 2 L/min and an initial concentration of 1 M for both reactants. The reactor should be operated at a temperature of 50°C and a pressure of 1 atm. What should be the volume of the CSTR and the flow rate of the cooling medium used to maintain the desired temperature?

asked Feb 3 in Chemical engineering by Diana66S829 (1.6k points)

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