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Calculate the standard enthalpy change (ΔH°) for the combustion reaction of ethanol (C2H5OH) if the heat evolved is 1367.6 kJ and the molar mass of ethanol is 46.07 g/mol.

asked Feb 3 in Chemical thermodynamics by WendellGosho (330 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 DirkMarlar51 (410 points)

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Calculate the standard free energy change (ΔG°) for the redox reaction:Cu(s) + 2Ag+(aq) → Cu2+(aq) + 2Ag(s) Given that the standard reduction potentials of Cu2+(aq)/Cu(s) and Ag+(aq)/Ag(s) are +0.34V and +0.80V, respectively.

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

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Calculate the standard enthalpy change for the reaction that occurs when 50 grams of ice at -10°C is heated to water at 25°C. The molar enthalpy of fusion of ice is 6.01 kJ/mol, and the specific heat capacity of water and ice are 4.184 J/g°C and 2.09 J/g°C, respectively. (Assume that the entire sample of ice is converted to water and that no heat is lost to the surroundings.)

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

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Calculate the standard electrode potential of the following reaction: Cu2+(aq) + 2e- ⇌ Cu(s) Given that the standard reduction potential of Cu2+(aq) is +0.34 V and the standard electrode potential of hydrogen electrode is 0.00 V.

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

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1 answer 26 views

Calculate the standard free energy change (ΔG°) for the following reaction at 25°C: 2Fe2+(aq) + Cu2+(aq) -> 2Fe3+(aq) + Cu+(aq) (Standard reduction potentials: Fe3+(aq) + e- -> Fe2+(aq) E° = 0.77 V Cu2+(aq) + e- -> Cu+(aq) E° = 0.16 V)

asked Feb 3 in Chemical thermodynamics by EvaAntonio06 (370 points)

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Calculate the standard electrode potential of the electrode in the given electrochemical cell: Fe3+(aq) + 3e- → Fe(s) E°= -0.04V Ag+(aq) + e- → Ag(s) E°= 0.80V

asked Feb 3 in ElectroChemistry by GitaNhp62295 (450 points)

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1 answer 29 views

Calculate the standard enthalpy change for the phase transition of ice to water at 298 K, given that the heat of fusion of ice is 6.01 kJ/mol and the molar heat capacity of ice and water are 37.0 J/(mol*K) and 75.3 J/(mol*K), respectively.

asked Feb 3 in Chemical thermodynamics by SimaMacBain4 (430 points)

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1 answer 28 views

Calculate the standard enthalpy change for the reaction of 2 moles of liquid ethanol with 3 moles of gaseous oxygen to form 2 moles of liquid acetic acid and 3 moles of gaseous water at 1 atm and 25°C, given the standard enthalpy of formation of ethanol, acetic acid, and water are -277.6 kJ/mol, -487.5 kJ/mol, and -285.8 kJ/mol respectively.

asked Feb 3 in Chemical thermodynamics by IEVKatlyn165 (450 points)

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Describe the steps involved in the preparation of 2,4-dichlorobenzoic acid from benzoic acid and chlorine gas, including the chemical reactions that occur during the process, the reagents required, the conditions required for each step, and the yields of each intermediate and final product.

asked Feb 3 in Chemical synthesis by DennyMacDonn (590 points)

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1 answer 29 views

Calculate the standard enthalpy change for the neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) using the following information:- The standard enthalpy of formation for HCl is -92.31 kJ/mol - The standard enthalpy of formation for NaOH is -469.11 kJ/mol The balanced equation for the reaction is:HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l)

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

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1 answer 33 views

Calculate the standard electrode potential for the redox reaction between the half cells Ag/Ag+ and Cu2+/Cu at 25°C, given that the standard electrode potentials for the half cells are +0.80 V and +0.34 V respectively.

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

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1 answer 27 views

Calculate the standard enthalpy change for the vaporization of 15 grams of water given that the molar enthalpy of vaporization of water is 40.7 kJ/mol.

asked Feb 3 in Chemical thermodynamics by Troy33809250 (430 points)

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1 answer 28 views

Calculate the standard enthalpy change for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) to form sodium chloride (NaCl) and water (H2O), given the following information:- Heat capacity of the solution = 4.18 J/g°C- Volume of the solution = 50 mL- Concentration of HCl = 0.25 M- Concentration of NaOH = 0.10 M

asked Feb 3 in Chemical thermodynamics by RBFSuzette64 (390 points)

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1 answer 40 views

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 JohnFreeland (410 points)

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1 answer 36 views

Calculate the number of electrons transferred when 1 mole of magnesium is oxidized to form magnesium ions in an electrochemical cell. The balanced half-reaction is Mg → Mg2+ + 2e-.

asked Feb 3 in ElectroChemistry by GonzaloBecer (350 points)

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1 answer 28 views

Calculate the standard enthalpy change for the reaction between 50 mL of 1.0 M HCl and 50 mL of 1.0 M NaOH at 25°C given that the temperature of the resultant solution is 31.2°C and the specific heat capacity of the solution is 4.184 J/g°C.

asked Feb 3 in Chemical thermodynamics by IsabellaMasc (630 points)

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1 answer 33 views

Calculate the standard electrode potential for the following reaction: Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s) Given that the standard electrode potentials for Zn2+/Zn and Cu2+/Cu are -0.76 V and 0.34 V respectively.

asked Feb 3 in ElectroChemistry by RicoPlath139 (450 points)

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1 answer 27 views

Calculate the standard enthalpy change for the sublimation of iodine (I2) given that the enthalpy of fusion for iodine is 15.52 kJ/mol and the enthalpy of vaporization for iodine is 41.57 kJ/mol.

asked Feb 3 in Chemical thermodynamics by TrenaBecher4 (370 points)

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1 answer 26 views

Calculate the standard enthalpy of formation of carbon dioxide given the following information: - Standard enthalpy of formation of graphite = 0 kJ/mol- Standard enthalpy of formation of oxygen gas = 0 kJ/mol- Enthalpy of combustion of graphite = -393.5 kJ/mol- Enthalpy of combustion of carbon monoxide = -283.0 kJ/mol- Enthalpy of combustion of hydrogen gas = -285.8 kJ/mol

asked Feb 3 in Chemical thermodynamics by YMPViola5184 (430 points)

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