Recent questions without an upvoted answer

0 votes

1 answer 63 views

Calculate the bond dissociation energy (in kJ/mol) required to break the carbon-hydrogen bond in methane using the given bond dissociation energies: C-H = 413 kJ/mol, C-C = 347 kJ/mol, C=C = 602 kJ/mol, H-H = 436 kJ/mol.

asked Jan 23 in ThermoChemistry by GabrielCantu (1.6k points)

0 votes

1 answer 65 views

Calculate the bond dissociation energy (in kJ/mol) of the H-Cl bond in hydrogen chloride molecule, given that the bond length is 127 pm and the vibrational frequency is 8.8 x 10^13 Hz.

asked Jan 23 in Chemical bonding by ThadGoetz093 (1.6k points)

0 votes

1 answer 81 views

Calculate the bond dissociation energy (in kJ/mol) of the H-Cl bond in HCl using the following data: the standard enthalpy of formation of HCl is -92.31 kJ/mol, the bond energy of H-H is 436 kJ/mol, and the bond energy of Cl-Cl is 240 kJ/mol.

asked Jan 23 in Chemical bonding by Damon31M1921 (2.4k points)

0 votes

1 answer 58 views

Calculate the bond dissociation energy (in kJ/mol) of the C-H bond in methane (CH4) using the following given data:- Enthalpy of formation of methane (CH4) = -74.8 kJ/mol- Enthalpy of combustion of methane (CH4) = -890.4 kJ/mol- Enthalpy change for the breaking of all four C-H bonds in methane = 1665 kJ/mol.

asked Jan 23 in ThermoChemistry by ChanteStroh (1.5k points)

0 votes

1 answer 56 views

Calculate the bond dissociation energy (in kJ/mol) of the C-H bond in methane (CH4) using the following data: - The enthalpy change for the combustion of one mole of methane gas is -890.3 kJ/mol.- The energy required to break one mole of H-H bonds is 433.4 kJ/mol.- The energy required to break one mole of C=O bonds is 799.5 kJ/mol.- The energy required to break one mole of O-H bonds is 463.0 kJ/mol.

asked Jan 23 in ThermoChemistry by TimNakamura (2.0k points)

0 votes

1 answer 50 views

Calculate the bond dissociation energy (in kJ/mol) of the C-H bond in methane (CH4) using experimental data.

asked Jan 23 in ThermoChemistry by IsabellaOcto (1.9k points)

0 votes

1 answer 70 views

Calculate the bond dissociation energy (in kJ/mol) of chlorine gas (Cl2) if it requires 243 kJ of energy to break a single Cl-Cl bond in the gas phase.

asked Jan 23 in ThermoChemistry by AlineBacon1 (1.5k points)

0 votes

1 answer 52 views

Calculate the bond dissociation energy (in kJ/mol) for the O-H bond in water (H2O) given that the enthalpy change for the reaction H2O (g) → H (g) + OH(g) is +495 kJ/mol and the enthalpy change for the reaction H2(g) + 1/2O2(g) → H2O(g) is -241.8 kJ/mol.

asked Jan 23 in ThermoChemistry by UweEales0685 (1.8k points)

0 votes

1 answer 54 views

Calculate the bond dissociation energy (in kJ/mol) for the carbon-hydrogen bond in methane (CH4) using the following information: - The enthalpy change for the reaction CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) is -890.3 kJ/mol. - The enthalpy change for the reaction 2H2(g) + O2(g) → 2H2O(g) is -484.2 kJ/mol.

asked Jan 23 in ThermoChemistry by JordanChun58 (2.3k points)

0 votes

1 answer 65 views

Calculate the bond dissociation energy (in kJ/mol) for the breaking of the carbon-hydrogen (C-H) bond in methane (CH4), given the following information: CH4 (g) → CH3 (g) + H (g) ∆H = 432 kJ/mol Note: The bond dissociation energy is the amount of energy required to break a bond between two atoms in a molecule, resulting in two separate atoms.

asked Jan 23 in ThermoChemistry by FerminRosale (1.5k points)

0 votes

1 answer 66 views

Calculate the bond angles and molecular geometry of the methane (CH4) molecule by using quantum chemistry principles.

asked Jan 23 in Quantum Chemistry by RosettaMcinn (1.7k points)

0 votes

1 answer 65 views

Calculate the boiling point of sodium chloride using Raoult's law assuming that the vapor pressure of pure water at the given temperature is 25 Torr and the mole fraction of NaCl in the solution is 0.2.

asked Jan 23 in Inorganic Chemistry by KarinStaley (1.9k points)

0 votes

1 answer 60 views

Calculate the boiling point of potassium chloride (KCl) using the Clausius-Clapeyron equation, given that its enthalpy of vaporization is 40.0 kJ/mol and its standard boiling point is 1500 K. What would be the expected boiling point of KCl at an atmospheric pressure of 1.0 atm (760 mmHg)?

asked Jan 23 in Inorganic Chemistry by ClevelandHaw (2.4k points)

0 votes

1 answer 76 views

Calculate the binding energy of a hydrogen molecule and a helium atom in their ground state using Quantum chemical calculations of non-covalent interactions. What is the strength of the interaction between these two species?

asked Jan 23 in Computational Chemistry by LewisR691771 (1.8k points)

0 votes

1 answer 67 views

Calculate the band gap energy (in eV) of a crystal using density functional theory calculations. Given the crystal's lattice parameters and the positions of its atoms, determine its electronic properties and predict whether it is likely to be an insulator, semiconductor, or conductor.

asked Jan 23 in Computational Chemistry by VirgilioAbe5 (1.9k points)

0 votes

1 answer 40 views

Calculate the band gap and optical absorption spectrum of a graphene monolayer using quantum chemical calculations and compare it with that of a MoS2 monolayer. Which material would be more suitable for optoelectronic devices? Explain your reasoning.

asked Jan 23 in Quantum Chemistry by CandelariaFe (1.6k points)

0 votes

1 answer 66 views

Calculate the average energy and specific heat capacity of a system containing 1000 molecules of an ideal gas at a temperature of 300 K, when the gas is subjected to an isochoric process and its volume remains constant at 2.5 L.

asked Jan 23 in Physical Chemistry by AOVFlorrie80 (1.7k points)

0 votes

1 answer 55 views

Calculate the area per molecule occupied by a monolayer of n-octadecane molecules adsorbed at the air-water interface assuming a surface pressure of 20 mN/m. The molecular weight of n-octadecane is 284.54 g/mol and its molecular area in the liquid phase is 0.219 nm². Use the Langmuir adsorption isotherm equation to solve the problem.

asked Jan 23 in Surface Chemistry by ElmoMcColl39 (1.7k points)

0 votes

1 answer 60 views

Calculate the anodic Tafel slope for the following electrochemical reaction taking place at a platinum electrode:Fe2+(aq) + 2e- → Fe(s) Given that the exchange current density is 4.50 x 10^-4 A/cm^2 and the reaction rate constant for the reaction is 2.5 x 10^5 cm/s.

asked Jan 23 in ElectroChemistry by DeanI7567799 (2.2k points)

0 votes

1 answer 59 views

Calculate the anodic Tafel slope for an electrochemical cell in which the corrosion current density is 0.05 mA/cm² and the anodic overpotential is 50 mV. The exchange current density for the anodic reaction is 0.02 mA/cm².

asked Jan 23 in ElectroChemistry by OrvalLasley3 (2.1k points)

Recent questions without an upvoted answer

Categories