Recent questions in Chemical thermodynamics

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What is the change in entropy when 2 moles of hydrogen gas react with 1 mole of oxygen gas to form 2 moles of water vapor at 298 K and 1 atm pressure?

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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What is the change in entropy when 2 moles of H2 (g) react with 1 mole of O2 (g) to form 2 moles of H2O (l) at a constant temperature of 298 K? (Assume standard molar entropy values for the reactants and products)

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy of formation of water (H2O) at 25°C and 1 atm pressure, given the heat of formation of hydrogen gas (H2) is +68.32 kJ/mol and the heat of formation of oxygen gas (O2) is zero?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy of formation of butane (C4H10) at 298 K and 1 atm pressure?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy of formation of methane (CH4) at constant temperature and pressure of 25°C and 1 atm respectively, given that the enthalpy change for the reaction C(s) + 2H2(g) -> CH4(g) is -74.8 kJ/mol?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change of vaporization of water at 373 K according to the following data:H2(g) + O2(g) → H2O(l) ΔH° = -285.8 kJ/molH2O(l) → H2O(g) ΔH° = +40.7 kJ/molNote: The answer should be in units of kJ/mol.

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change of neutralization for the reaction between hydrochloric acid and sodium hydroxide, given that the heat of reaction for the neutralization of 1 mole of HCl and 1 mole of NaOH is -57.1 kJ?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change of neutralization for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)? Assume that the reaction occurs in aqueous solution and that the products are water (H2O) and sodium chloride (NaCl).

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change of neutralization for the reaction between hydrochloric acid and sodium hydroxide? Show all calculations and provide a conclusion based on your result.

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change of fusion for water? Show your calculation using the given data: the molar enthalpy of fusion of ice is 6.01 kJ/mol and the molar enthalpy of vaporization of water is 40.67 kJ/mol.

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the vaporization reaction of ethanol (C2H5OH) at 298 K, given that the enthalpy of vaporization of ethanol is 38.56 kJ/mol and the standard enthalpy of formation of liquid ethanol is -277.69 kJ/mol?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the vaporization reaction of ethanol (C2H5OH) given that the heat of vaporization at its boiling point of 78.4 °C is 38.56 kJ/mol?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the vaporization of 50 grams of water at its boiling point (100°C) and standard pressure (1 atm)?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the sublimation of solid iodine into gaseous iodine atoms? Express your answer in units of kJ/mol.

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the sublimation of solid carbon dioxide at 25°C, if 50 g of carbon dioxide is sublimed?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the sublimation of solid carbon dioxide (CO2) at 25°C and 1 atm pressure?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the sublimation of iodine at 25°C and 1 atm pressure, if the enthalpy of formation of solid iodine is -107.3 kJ/mol and that of gaseous iodine is 62.4 kJ/mol?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the sublimation of iodine, given the following information: the standard enthalpy of fusion of solid iodine is 15.52 kJ/mol, and the standard enthalpy of vaporization of iodine is 41.91 kJ/mol?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the sublimation of iodine? Given that the standard enthalpy of fusion for iodine is 15.52 kJ/mol, and the standard enthalpy of vaporization for iodine is 41.57 kJ/mol.

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard enthalpy change for the sublimation of iodine, given that the standard enthalpy of fusion of iodine is 15.2 kJ/mol and the standard enthalpy of vaporization is 41.7 kJ/mol?

asked Feb 25 in Chemical thermodynamics by TheScientist (138k points)

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