Recent questions in Chemical thermodynamics

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What is the heat capacity of 20 grams of water if it is heated from 25°C to 50°C?

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

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What is the Gibbs free energy change, ΔG, for the reaction 2H2(g) + O2(g) → 2H2O(g) at 25°C and 1 bar, given the standard Gibbs free energy of formation values for H2(g), O2(g), and H2O(g)?

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

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What is the Gibbs free energy change at 25°C for the reaction: 2NO(g) + O2(g) → 2NO2(g) given that the standard Gibbs free energy of formation of NO, O2, and NO2 are +90.4 kJ/mol, 0 kJ/mol and +51.3 kJ/mol, respectively?

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

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What is the Gibbs free energy change for the reaction where 2 moles of hydrogen gas (H2) react with 1 mole of oxygen gas (O2) to form 2 moles of water vapor (H2O) at standard conditions (298 K and 1 atm pressure)?

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

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What is the Gibbs free energy change for the reaction of hydrogen gas (H2) and chlorine gas (Cl2) to form hydrochloric acid (2HCl) at standard conditions (298 K and 1 atm)?

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

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What is the Gibbs free energy change for the formation of 2 moles of water molecules from hydrogen gas and oxygen gas at standard conditions (298 K and 1 atm pressure)? Give the answer in kJ/mol.

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

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What is the Gibbs free energy change (ΔG) for the reaction, given the standard Gibbs free energy change (ΔG°) and the reaction quotient (Q)? For example, for the reaction A + B → C, if ΔG° is -100 kJ/mol and Q is 0.5, what is the ΔG for the reaction?

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

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What is the equilibrium constant for the reaction: 2H2 (g) + O2 (g) ⇌ 2H2O (g)at 298 K, given that the partial pressures of H2 and O2 are 0.15 atm and 0.10 atm, respectively, at equilibrium?

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

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What is the equilibrium constant at a temperature of 298 K for the reaction 2NOCl(g) ⇌ 2NO(g) + Cl2(g) if the initial concentrations at equilibrium are [NOCl] = 0.200 M, [NO] = 0.0250 M, and [Cl2] = 0.0250 M?

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

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What is the entropy change for the combustion of methane (CH4) at constant pressure and standard conditions (298 K and 1 atm)?

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

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What is the entropy change when 2 moles of water vapor (H2O(g)) condense to liquid water (H2O(l)) at 100°C and 1 atm pressure?

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

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What is the entropy change (ΔS) for the reaction of burning 2 moles of methane gas (CH4) in excess oxygen gas (O2) at standard conditions? The balanced chemical equation for this reaction is:CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

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

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What is the entropy change (∆S) for the reaction: 2H2(g) + O2(g) → 2H2O(l) given the standard entropy values ∆S°(H2(g)) = 130.6 J/K·mol ∆S°(O2(g)) = 205.0 J/K·mol ∆S°(H2O(l)) = -69.9 J/K·mol

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

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What is the entropy change (∆S) for the following reaction?2H2(g) + O2(g) → 2H2O(l)Given that the standard molar entropy of H2(g), O2(g), and H2O(l) are 131.3 J/K•mol, 205.0 J/K•mol, and 70.0 J/K•mol respectively.

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

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What is the enthalpy change for the reaction: 2H2(g) + O2(g) → 2H2O(l) given the following bond enthalpy values: H-H: 436 kJ/mol, O=O: 495 kJ/mol, H-O: 464 kJ/mol (assume that all gases are at standard conditions)?

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

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What is the enthalpy change for the reaction: 2H2(g) + O2(g) → 2H2O(l) Given that the standard enthalpy of formation for H2O(l) is -285.8 kJ/mol, and the standard enthalpy of formation for H2(g) and O2(g) are 0 kJ/mol.

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

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What is the enthalpy change in kilojoules for the reaction:2H2(g) + O2(g) → 2H2O(l)given that the standard enthalpy of formation for liquid water is -285.8 kJ/mol, and the standard enthalpy of formation for hydrogen gas and oxygen gas are 0 kJ/mol?

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

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What is the enthalpy change for the combustion of propane?

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

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What is the enthalpy change for the combustion of 1 mole of butane (C₄H₁₀) gas (g) under standard conditions?

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

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What is the enthalpy change for the following chemical reaction?2H2 (g) + O2 (g) → 2H2O (l)Given the enthalpy of formation values:ΔHf°(H2O) = -285.8 kJ/molΔHf°(H2) = 0 kJ/molΔHf°(O2) = 0 kJ/mol

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

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