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What is the change in enthalpy for the following reaction at room temperature: 2H2(g) + O2(g) -> 2H2O(l) given the bond dissociation energies: H-H: 436 kJ/mol O=O: 498 kJ/mol H-O: 463 kJ/mol

asked Mar 1 in Quantum Chemistry by TheScientist (138k points)

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What is the change in enthalpy of a chemical reaction if 25 grams of methane gas (CH4) reacts with excess oxygen gas (O2) to produce carbon dioxide gas (CO2) and water vapor (H2O) at a constant pressure of 1 atm and a temperature of 298 Kelvin?

asked Mar 1 in Physical Chemistry by TheScientist (138k points)

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What is the change in enthalpy (ΔH) for the combustion of propane (C3H8) at standard conditions, given that the heat of formation (ΔHf) for propane is -103.85 kJ/mol, and the combustion reaction is:C3H8(g) + 5 O2(g) --> 3 CO2(g) + 4 H2O(l)

asked Mar 1 in Physical Chemistry by TheScientist (138k points)

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What is the change in enthalpy (in kilojoules) for the combustion reaction of methane (CH4) at standard conditions (298 K, 1 atm)?

asked Mar 1 in Quantum Chemistry by TheScientist (138k points)

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What is the change in enthalpy (ΔH) for the combustion of 10 grams of methane (CH4) at standard conditions, given the following balanced equation: CH4 + 2O2 → CO2 + 2H2O?

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

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What is the change in enthalpy and entropy for the reaction of 2 moles of hydrogen gas (H2) and 1 mole of oxygen gas (O2) to form 2 moles of water (H2O) at standard conditions?

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What is the change in enthalpy and entropy when 2 moles of Hydrogen gas reacts with 1 mole of Oxygen gas to form 2 moles of water vapor at a constant pressure of 1 atm and a temperature of 298 K?

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What is the change in enthalpy and entropy for the reaction of 2 moles of sodium hydroxide with 1 mole of sulfuric acid to form 2 moles of water and 1 mole of sodium sulfate, assuming standard conditions?

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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Sure! Here's a precise problem:Calculate the cell potential for the following electrochemical reaction: Fe(s) + Cu2+(aq) → Fe2+(aq) + Cu(s) Assume that the concentrations of Fe2+(aq) and Cu2+(aq) are both 1.00 M and the temperature is 25°C.

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

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What is the cell potential for the following electrochemical reaction at 25°C? Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)Given: E° (Zn²⁺/Zn) = -0.76 VE° (Cu²⁺/Cu) = +0.34 V

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

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What is the cathodic Tafel slope of a zinc electrode immersed in a solution of 0.1 M Zn2+ ions at 25°C, when the current density is 50 mA/cm²? The exchange current density for this reaction is known to be 1.2 x 10^-6 A/cm².

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

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Using molecular orbital theory, calculate the bond order of the carbon monoxide (CO) molecule.

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

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Using molecular orbital theory, calculate the bond order of the carbon monoxide molecule (CO). Show your work and explain how the bond order relates to the stability of the molecule.

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

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Using molecular orbital theory, calculate the bond order of the molecule N2+.

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

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Using molecular orbital theory, calculate the bond order of CO molecule and determine if it is paramagnetic or diamagnetic.

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

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Using molecular orbital theory, calculate the bond order and predict the stability of nitrogen molecule (N2)?

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

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Using the molecular orbital theory, calculate the bond order and predict the magnetic behavior of carbon monoxide (CO) according to its electronic structure.

asked Mar 1 in Quantum Chemistry by TheScientist (138k points)

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What is the bond length between nitrogen and oxygen atoms in NO molecule? Given the bond energy of NO is 602 kJ/mol and the reduced mass of the NO molecule is 14.8 amu.

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

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Using quantum mechanics, calculate the bond length and dissociation energy of the HCl molecule.

asked Mar 1 in Physical Chemistry by TheScientist (138k points)

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What is the bond enthalpy of the carbon-carbon bond in a molecule of ethane? Given that the enthalpy change for the reaction C2H6(g) → 2CH3(g) is +84.7 kJ/mol, calculate the bond enthalpy for the C-C bond in ethane.

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

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