Recent questions in Chemistry

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1 answer 33 views

Determine the equilibrium concentrations of reactants and products for the reaction 2H2(g) + O2(g) ⇌ 2H2O(g) at 500K when initial concentrations of H2 and O2 are 0.2M and 0.1M respectively, and the equilibrium constant (Kc) is 4.67 x 10^3.

asked Feb 4 in Chemical equilibrium by MalissaFuchs (310 points)

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1 answer 69 views

Determine the entropy change for the combustion of methane gas (CH4) at constant pressure and 298 K. Given the standard molar entropy values are: S°(CH4) = 186 J/mol.K, S°(O2) = 205 J/mol.K, S°(CO2) = 214 J/mol.K and S°(H2O) = 188 J/mol.K.

asked Feb 4 in Chemical thermodynamics by JulietaLudlu (490 points)

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1 answer 42 views

Determine the enthalpy of hydrolysis for sodium acetate (NaC2H3O2) given that the enthalpy of neutralization for acetic acid (HC2H3O2) and sodium hydroxide (NaOH) is -55.9 kJ/mol and the heat of formation for NaC2H3O2 is -382.7 kJ/mol.

asked Feb 4 in ThermoChemistry by RollandBoehm (290 points)

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1 answer 32 views

Determine the enthalpy of desorption for carbon dioxide from activated charcoal at 25°C. Given: the equilibrium pressure of CO2 is 0.1 atm and the mass of charcoal used is 2.5 g.

asked Feb 4 in ThermoChemistry by IsraelOaks8 (510 points)

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1 answer 55 views

Determine the enthalpy of adsorption for the reaction of hydrogen gas adsorbing onto a platinum surface, given that 2.00 g of hydrogen gas is adsorbed onto a 1.00 g platinum surface at 25°C and the pressure is 1 bar. The volume of the system is 1.00 L and the initial temperature of the platinum surface is also 25°C. Assume that the surface is in thermal equilibrium with the surroundings and that the gas behaves ideally.

asked Feb 4 in ThermoChemistry by CecilaMarzan (620 points)

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1 answer 60 views

Determine the enthalpy change of precipitation for the reaction between 50ml of 0.1M sodium sulfate and 50ml of 0.1M barium nitrate, given that the final temperature is 25°C and the initial temperature was 30°C. The specific heat capacity of the solution is 4.18 J/g °C and the density is 1 g/mL. (Assume the reaction goes to completion and all volumes are additive.)

asked Feb 4 in ThermoChemistry by EthelSchenk9 (290 points)

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1 answer 48 views

Determine the enthalpy change of precipitation for the reaction between 50 mL of 0.1 M NaOH and 50 mL of 0.1 M CuSO4, given that the final solution has a temperature of 25°C and the specific heat capacity of the solution is 4.18 J/g·°C.

asked Feb 4 in ThermoChemistry by TylerRobin60 (430 points)

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1 answer 55 views

Determine the enthalpy change for the oxidation of 2 moles of iron (Fe) to form iron oxide (FeO) using the following data: Fe + 1/2 O2 → FeO ΔH = -65.0 kJ/mol 4 Fe + 3 O2 → 2 Fe2O3 ΔH = -1648.6 kJ/mol

asked Feb 4 in ThermoChemistry by MarcelinoLyl (490 points)

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1 answer 44 views

Determine the empirical formula of a compound containing 36.5% sodium, 38.1% chlorine, and 25.4% oxygen by mass.

asked Feb 4 in Inorganic Chemistry by WallyCraney5 (510 points)

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1 answer 44 views

Determine the electronic structure and binding energy of a ruthenium-based transition metal complex using ab initio calculations, and discuss the potential reactivity of this complex in various chemical environments.

asked Feb 4 in Computational Chemistry by DonMccune367 (610 points)

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1 answer 50 views

Determine the crystal structure of a compound with the empirical formula C6H12O6, given its X-ray diffraction pattern.

asked Feb 4 in Physical Chemistry by EmilyWaterwo (430 points)

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1 answer 48 views

Determine the crystal field splitting energy for a coordination compound with a tetrahedral geometry, given the following information: the metal ion has six d electrons, the ligand field splitting parameter (Δtetrahedral) is 4000 cm⁻¹, and the compound's absorption spectrum shows a strong absorption band at 600 nm.

asked Feb 4 in Coordination Chemistry by TaraFreeleag (430 points)

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1 answer 41 views

Determine the critical micelle concentration of the sodium dodecyl sulfate (SDS) in water by plotting the surface tension of SDS solutions at different concentrations.

asked Feb 4 in Surface Chemistry by AbdulCorser8 (290 points)

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1 answer 50 views

Determine the corrosion current density of a copper plate in a 0.1 M NaCl solution at 25°C, given that the corrosion potential of the copper plate in the solution is -0.54 V vs. the standard hydrogen electrode (SHE) and the Tafel slope for copper in the solution is 120 mV/decade.

asked Feb 4 in ElectroChemistry by MaiHutchinso (470 points)

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1 answer 37 views

Determine the concentration of copper ions in a copper sulfate solution by constructing an electrochemical cell and measuring its voltage using a standard hydrogen electrode.

asked Feb 4 in Physical Chemistry by NolanLeSouef (490 points)

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1 answer 34 views

Determine the bond order of the molecule N2 using molecular orbital theory and predict whether the molecule is paramagnetic or diamagnetic.

asked Feb 4 in Chemical bonding by AdolfoGagai (470 points)

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1 answer 52 views

Determine the bond order of the molecule CO using molecular orbital theory. Show all the molecular orbital diagrams and explain why the molecule is or is not expected to be stable.

asked Feb 4 in Chemical bonding by Frank7401499 (450 points)

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1 answer 43 views

Determine the bond order of O2 using molecular orbital theory.

asked Feb 4 in Chemical bonding by MonteFeez464 (370 points)

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1 answer 30 views

Determine the bond order of O2 molecule using molecular orbital theory and explain the resultant bond strength in relation to the stability of the molecule.

asked Feb 4 in Chemical bonding by OctavioReymo (290 points)

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1 answer 46 views

Determine the bond order for the oxygen molecule using molecular orbital theory. Show all calculations and explain how the bond order relates to the stability of the molecule.

asked Feb 4 in Chemical bonding by MckinleyDigg (480 points)

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