Recent activity by LionelBonney

1 answer 29 views

What is the rate law expression for the reaction between hydrogen peroxide and iodide ions?

asked Feb 22 in Chemical kinetics

1 answer 35 views

How does the polarity of a solvent affect the photochemical reaction rate of a specific compound?

1 answer 29 views

What is the standard enthalpy change for the neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)? Express your answer in kilojoules per mole of HCl. (Assume that the reaction is in water and under standard conditions.)

answered Feb 21 in Chemical thermodynamics

1 answer 39 views

How does the coordination number and the nature of the ligands affect the crystal field splitting energies in transition metal complexes? Provide an example to illustrate your point.

asked Feb 19 in Coordination Chemistry

1 answer 28 views

What is the effect of surface roughness on the adhesion strength of a coating on a metal surface?

asked Feb 17 in Surface Chemistry

1 answer 36 views

How can we optimize the photochemical properties of luminescent materials for their use in organic light-emitting diodes (OLEDs)?

asked Feb 14 in PhotoChemistry

1 answer 28 views

How do metal ions coordinate with amino acid residues in metalloenzymes and metalloproteins, and how does the coordination affect the function of the enzyme/protein?

asked Feb 13 in Coordination Chemistry

1 answer 67 views

How can we design and optimize the self-assembly of surfactant molecules to form ordered monolayers on solid surfaces with tunable properties, such as wettability, adhesion, and friction, for potential applications in nanotechnology and biomaterials?

answered Feb 12 in Physical Chemistry

1 answer 63 views

What is the mechanism by which chlorofluorocarbons (CFCs) deplete the ozone layer? How does their chemical structure contribute to this process?

answered Feb 12 in Environmental Chemistry

1 answer 44 views

How can the efficiency of the production process for detergents be optimized while minimizing environmental impact?

asked Feb 7 in Chemical engineering

1 answer 31 views

How can the compatibility of polymer blends be improved to enhance their mechanical properties and overall performance?

answered Feb 6 in Polymer Chemistry

1 answer 48 views

How can the chemical engineering principles be applied to optimize the production process of detergents with maximum effectiveness and efficiency while minimizing environmental impact?

answered Feb 6 in Chemical engineering

1 answer 37 views

How can chemistry students with limited access to laboratory equipment and facilities still conduct meaningful experiments to supplement their learning?

answered Feb 5 in Chemical education

1 answer 49 views

Calculate the standard enthalpy change for the reaction: [Cu(H2O)6]2+(aq) + 2NH3(aq) → [Cu(NH3)4(H2O)2]2+(aq) + 4H2O(l)given the following information: ΔHf° [Cu(H2O)6]2+(aq) = -203.2 kJ/molΔHf° [Cu(NH3)4(H2O)2]2+(aq) = -368.5 kJ/molΔHf° H2O(l) = -285.8 kJ/molΔHf° NH3(aq) = -80.8 kJ/mol

asked Feb 3 in Chemical thermodynamics

1 answer 61 views

Calculate the standard enthalpy change for the phase transition reaction of solid carbon dioxide (dry ice) at -78.5°C to gaseous carbon dioxide at 1 atm and 25°C, given the following information: The standard enthalpy of fusion of solid carbon dioxide is 8.4 kJ/mol and the standard enthalpy of vaporization of gaseous carbon dioxide is 22.1 kJ/mol.

answered Feb 3 in Chemical thermodynamics

1 answer 117 views

What is the effect of adding titanium to an aluminum alloy and how does it improve its properties for use in aerospace applications?

answered Jan 30 in Materials Chemistry

1 answer 96 views

How does a change in pH affect the formation of complex ions in a chemical equilibrium system? Provide an explanation and relevant examples.

answered Jan 30 in Chemical equilibrium

1 answer 115 views

What steps can a chemistry student take to access limited chemistry textbooks and resources for self-study without access to a physical library or bookstore?

answered Jan 30 in Chemical education

1 answer 89 views

How can X-ray diffraction be used to determine the crystalline structure and chemical composition of an unknown sample? Provide a step-by-step explanation of the process involved in conducting and interpreting X-ray diffraction analysis.

answered Jan 30 in Analytical Chemistry

1 answer 71 views

How can the concentration of chloride ions in a sample solution be determined using an ion-selective electrode?

answered Jan 29 in Analytical Chemistry

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