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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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Calculate the standard enthalpy change for the reaction between 25 mL of 0.1 M HCl and 25 mL of 0.1 M NaOH, assuming the reaction takes place in aqueous solution and is complete. The temperature of the solutions should be maintained at a constant 25°C during the reaction. (Assume the density of the solutions is 1 g/mL and the specific heat capacity of the solutions is 4.18 J/g°C).

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

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Calculate the standard enthalpy change for the reaction between 2.00 moles of liquid ethanol (C2H5OH) and 3.50 moles of gaseous oxygen (O2) to form carbon dioxide (CO2) gas and liquid water (H2O) at 25°C and standard pressure. The balanced chemical equation for the reaction is C2H5OH + 3O2 → 2CO2 + 3H2O. (The molar enthalpies of formation for C2H5OH, CO2, and H2O are -277.6 kJ/mol, -393.5 kJ/mol, and -285.8 kJ/mol, respectively.)

asked Feb 3 in Chemical thermodynamics by KianCavill6 (1.6k points)

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1 answer 118 views

Calculate the standard enthalpy change for the reaction between [Fe(H2O)6]2+ and 2Cl- ions to produce [FeCl4]2- complex ion given that the enthalpy of formation for [FeCl4]2- is -392 kJ/mol and the enthalpies of hydration for Fe2+ and Cl- ions are -340 kJ/mol and -381 kJ/mol, respectively.

asked Feb 3 in Chemical thermodynamics by Osvaldo14767 (1.8k points)

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Calculate the standard enthalpy change for the reaction between [Co(en)2Cl2]Cl and NaNO2 to form [Co(en)2(NO2)2]Cl and NaCl, given the following information: [Co(en)2Cl2]Cl and [Co(en)2(NO2)2]Cl have a ΔHf° of -288 kJ/mol and -136 kJ/mol, respectively. The ΔHf° of NaNO2 and NaCl are -463.2 kJ/mol and -411.2 kJ/mol, respectively. Assume that the reaction is conducted at a constant pressure and temperature of 298 K.

asked Feb 3 in Chemical thermodynamics by YQYFlora9901 (1.9k points)

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1 answer 132 views

Calculate the standard enthalpy change for the reaction below, given the standard enthalpy of formation values: 2CO(g) + O2(g) → 2CO2(g)ΔH°f (CO) = -110.5 kJ/molΔH°f (O2) = 0 kJ/molΔH°f (CO2) = -393.5 kJ/mol

asked Feb 3 in Chemical thermodynamics by Damon31M1921 (2.4k points)

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Calculate the standard enthalpy change for the reaction A(s) + 2B(g) → 3C(l) + D(g) given the following data:• ΔHf° for A(s) is -100 kJ/mol• ΔHf° for C(l) is -50 kJ/mol• ΔS° for the reaction is 450 J/K•mol• ΔS° for D(g) is 200 J/K•mol

asked Feb 3 in Inorganic Chemistry by CesarSpragg2 (2.1k points)

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Calculate the standard enthalpy change for the reaction 2H2(g) + O2(g) ⟶ 2H2O(g), given that the standard enthalpies of formation of H2(g), O2(g), and H2O(g) are 0 kJ/mol, 0 kJ/mol, and -242 kJ/mol, respectively.

asked Feb 3 in Chemical thermodynamics by JamisonKwan8 (1.7k points)

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1 answer 115 views

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 change for the precipitation reaction: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)given that the standard enthalpy of formation for AgCl(s) is -127.0 kJ/mol, and for NaNO3(aq) is -467.14 kJ/mol. The molar enthalpy of solution of NaCl and AgNO3 are -3.9 kJ/mol and -19.9 kJ/mol respectively.

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

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Calculate the standard enthalpy change for the precipitation reaction: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) Given that the standard enthalpy of formation (∆Hf) for AgNO3(aq), NaCl(aq), AgCl(s), and NaNO3(aq) are -123.1 kJ/mol, -407.3 kJ/mol, -127.0 kJ/mol, and -467.3 kJ/mol respectively.

asked Feb 3 in Chemical thermodynamics by ClaritaTrive (2.4k points)

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1 answer 87 views

Calculate the standard enthalpy change for the precipitation reaction that takes place when 25.0 mL of 0.250 M barium chloride (BaCl2) and 50.0 mL of 0.100 M sodium sulfate (Na2SO4) react to form a precipitate of barium sulfate (BaSO4). The density of each solution is 1.00 g/mL and the specific heat capacity is 4.18 J/g°C. Assume a constant temperature of 25°C.

asked Feb 3 in Chemical thermodynamics by MonikaQuirk7 (2.0k points)

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Calculate the standard enthalpy change for the precipitation reaction that occurs when 100 mL of 0.2 M lead nitrate solution reacts with 100 mL of 0.1 M sodium iodide solution to form solid lead iodide and aqueous sodium nitrate. The balanced chemical equation for the reaction is:Pb(NO3)2(aq) + 2 NaI(aq) → PbI2(s) + 2 NaNO3(aq)Given: - Molar mass of Pb(NO3)2 = 331.20 g/mol - Molar mass of NaI = 149.89 g/mol - Density of 0.2 M lead nitrate solution = 1.055 g/mL - Density of 0.1 M sodium iodide solution = 1.04 g/mL - Specific heat capacity of the reaction mixture is 4.18 J/(g · °C) - The initial temperature of the reaction mixture and the surroundings is 25 °C.

asked Feb 3 in Chemical thermodynamics by MaynardErb58 (2.0k points)

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1 answer 89 views

Calculate the standard enthalpy change for the precipitation reaction of solid silver chloride (AgCl) from the aqueous solution with the precipitation agent, hydrochloric acid (HCl). Given the molar enthalpies of formation of AgCl(s) and HCl(g) are -127.01 kJ/mol and -92.31 kJ/mol, respectively. The balanced equation for the reaction is: AgNO3(aq) + HCl(aq) → AgCl(s) + HNO3(aq)

asked Feb 3 in Chemical thermodynamics by Estella80D9 (2.2k points)

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Calculate the standard enthalpy change for the precipitation reaction of copper(II) sulfate and sodium hydroxide, given the following balanced chemical equation:CuSO4(aq) + 2NaOH(aq) → Cu(OH)2(s) + Na2SO4(aq)Assume the reaction takes place under standard conditions and the necessary species are present in their standard states. Round your answer to two decimal places.

asked Feb 3 in Chemical thermodynamics by YRPAbe659621 (2.3k points)

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1 answer 126 views

Calculate the standard enthalpy change for the precipitation reaction of 50.0 grams of barium chloride and 75.0 grams of potassium sulfate to form solid barium sulfate and aqueous potassium chloride, given that the heat of formation of solid barium sulfate is -1474 kJ/mol and aqueous potassium chloride is -436 kJ/mol.

asked Feb 3 in Chemical thermodynamics by JordanChun58 (2.3k points)

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1 answer 137 views

Calculate the standard enthalpy change for the precipitation reaction between lead(II) nitrate and sodium chloride to form lead(II) chloride and sodium nitrate. The balanced chemical equation for the reaction is:Pb(NO3)2 (aq) + 2NaCl (aq) → PbCl2 (s) + 2NaNO3 (aq)

asked Feb 3 in Chemical thermodynamics by DeanneMack98 (2.1k points)

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1 answer 120 views

Calculate the standard enthalpy change for the precipitation reaction between aqueous silver nitrate (AgNO3) and aqueous sodium chloride (NaCl) to form solid silver chloride (AgCl) and aqueous sodium nitrate (NaNO3), given the following balanced chemical equation:AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3 (aq) Assume that the reaction takes place under standard conditions (25°C and 1 atm) and that all solutions are at 1 M concentration.

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

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Calculate the standard enthalpy change for the precipitation reaction between 70.0 mL of 0.500 M lead(II) nitrate solution and excess sodium iodide solution at 25°C, if the resulting precipitate is PbI2 and the specific heat capacity of the solution is 4.18 J g^-1°C^-1.

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

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Calculate the standard enthalpy change for the phase transition reaction, where 1 mole of solid water (ice) is transformed into 1 mole of liquid water at a constant pressure of 1 atm and a temperature of 298 K. Given the specific heat capacity of ice is 2.108 J g^-1 K^-1 and the specific heat capacity of water is 4.184 J g^-1 K^-1. The molar enthalpy of fusion of water is 6.01 kJ/mol.

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

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