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What is the enthalpy change for the reaction 2CuO(s) + C(s) → 2Cu(s) + CO2(g) if the enthalpy of formation for CuO(s) is -159.2 kJ/mol, the enthalpy of formation for CO2(g) is -393.5 kJ/mol, and the standard enthalpy of formation for Cu(s) is 0?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the isomerization of butene-1 to butene-2, given that the standard enthalpy of formation for butene-1 and butene-2 are -123 kJ/mol and -131 kJ/mol respectively?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the isomerization of 2-butene to 1-butene at constant pressure, given that the standard enthalpy of formation of 2-butene is -118.0 kJ/mol and the standard enthalpy of formation of 1-butene is -133.9 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the ionization of a 1 mol/L solution of hydrochloric acid (HCl) at 25 °C, given that the pH of the solution is 1.5?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the hydrolysis reaction of sucrose (C12H22O11) in water, given that the molar heat of combustion for sucrose is -5632 kJ/mol and the standard enthalpy of formation for liquid water is -285.83 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the hydrolysis of 10 grams of sucrose (C12H22O11) in an aqueous solution, assuming complete reaction and a standard state, given that the enthalpy of hydrolysis of sucrose is -564.9 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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Sure! Here's a question:Calculate the enthalpy change for the following chemical reaction: 2H2 (g) + O2 (g) → 2H2O (l) Given the following enthalpy changes: 2H2 (g) + O2 (g) → 2H2O (g) ΔH = -483.6 kJ/mol 2H2O (g) → 2H2O (l) ΔH = -40.7 kJ/mol

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the dissolution of 5 grams of solid NaOH in 100 mL of water, given that the final temperature of the solution is 25°C? The heat capacity of the solution is 4.18 J/g°C.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the dissolution of 4.5 grams of NaOH in water, given that the molar enthalpy of dissolution is -44.5 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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Sure! Here is a question for the student to solve:What is the enthalpy change for the dissolution of 10 grams of potassium nitrate (KNO3) in 100 grams of water at 25°C? Given the molar enthalpy of dissolution for KNO3 to be -34.01 kJ/mol.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the dissolution of 10 grams of NaCl in 100 mL of water at 25°C given that the enthalpy of solution of NaCl is -3.9 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the complete combustion of 2 moles of propane (C3H8) in the presence of excess oxygen gas (O2)?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change when 2.5 moles of methane are burned completely in excess oxygen gas, given that the enthalpy of combustion of methane is -890 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the combustion of 1 mole of methane (CH4) at constant pressure if the standard enthalpy of formation of methane is -74.8 kJ/mol? Write a balanced equation for the combustion reaction and show your calculations.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the combustion of 1 mole of methane gas (CH4) at standard conditions, given that the enthalpies of formation for methane, carbon dioxide, and water are -74.8 kJ/mol, -393.5 kJ/mol, and -285.8 kJ/mol, respectively?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for the reaction of burning 1 mole of methane gas (CH4) at standard conditions (25°C and 1 atm)?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for dissolving 10 grams of sodium chloride (NaCl) in 100 mL of water at 25°C? The heat capacity of water is 4.18 J/(g·°C) and the enthalpy of formation of NaCl is -411.1 kJ/mol.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for dissolving 10 grams of potassium chloride in 100 mL of water at 25°C if the resulting solution has a concentration of 0.5 M?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change for dissolving 10 grams of sodium chloride (NaCl) in 200 mL of water at 25°C if the final temperature of the solution is 30°C? Given: the enthalpy of solution for NaCl is -3.9 kJ/mol.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy change associated with the fusion of 45.0 g of ice at 0°C? Given the enthalpy of fusion for water is 6.01 kJ/mol.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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