Recent activity by Osvaldo14767

1 answer 29 views

How does the reaction rate affect the selectivity of a chemical reaction between reactants A and B, when the reaction temperature and concentration of the reactants are kept constant?

asked Feb 22 in Chemical kinetics

1 answer 28 views

What is the quantum yield of a photochemical reaction in which 50% of the absorbed photons lead to the formation of the product? How does it differ from the quantum efficiency of the reaction and how can it be experimentally determined?

answered Feb 22 in Physical Chemistry

1 answer 32 views

How does the presence of heavy metals in industrial effluents affect the quality of groundwater in the surrounding area and what measures can be taken to minimize its impact on the environment?

asked Feb 22 in Environmental Chemistry

1 answer 27 views

How does the presence of an ether or epoxide functional group affect the reactivity of a molecule in a nucleophilic substitution reaction? Provide a detailed explanation and example based on your understanding of the reaction mechanism.

answered Feb 22 in Organic Chemistry

1 answer 34 views

What is the maximum adsorption capacity (in moles per square meter) of a surface with a Langmuir adsorption isotherm when the equilibrium constant is 2 x 10^3 M^-1 and the concentration of adsorbate in solution is 5 x 10^-4 M?

asked Feb 20 in Surface Chemistry

1 answer 39 views

How can the yield of a chemical reaction be optimized by manipulating the reaction conditions and parameters such as temperature, pressure, reactant concentrations, and catalysts for the synthesis of ethyl acetate via Fischer esterification reaction?

answered Feb 20 in Chemical engineering

1 answer 25 views

How does the coordination environment of metallophthalocyanines affect their electrochemical properties and catalytic activity for oxygen reduction reactions?

asked Feb 19 in Coordination Chemistry

1 answer 30 views

How does the coordination chemistry of metalloenzymes and metalloproteins affect their function in biological systems?

asked Feb 19 in Coordination Chemistry

1 answer 37 views

How does the change in concentration of reactants and products affect the rate of a reversible chemical reaction at equilibrium?

asked Feb 18 in Chemical kinetics

1 answer 28 views

How does surface modification of nanoparticles affect their stability and reactivity in different chemical environments?

asked Feb 17 in Surface Chemistry

1 answer 35 views

How does the process of RNA transcription and translation differ in eukaryotic and prokaryotic cells?

answered Feb 14 in BioChemistry

1 answer 35 views

How do different types of agricultural practices, such as organic farming versus conventional farming, impact the environment differently in terms of soil health, water quality, and greenhouse gas emissions?

asked Feb 14 in Environmental Chemistry

1 answer 64 views

Which type of inorganic solid is KCl, NaCl and MgO? Ionic, covalent or metallic? Provide a brief explanation for your answer.

asked Feb 13 in Inorganic Chemistry

1 answer 93 views

How does the doping concentration of a conductive polymer affect its electrical conductivity and mechanical properties, and what is the optimal doping level for use in flexible electronics?

asked Feb 12 in Materials Chemistry

1 answer 64 views

What is the effect of chirality on the photochemical properties of molecules and how does it impact the formation of enantiomers? Provide a detailed explanation with relevant examples.

answered Feb 12 in PhotoChemistry

1 answer 137 views

How can the synthesis method of quantum dots be modified to improve their quantum yield and decrease their toxicity for potential applications in biomedicine?

answered Feb 11 in Materials Chemistry

1 answer 16 views

How can the synthesis and characterization techniques be optimized to improve the performance of lithium-ion batteries for practical energy storage applications?

asked Feb 11 in Materials Chemistry

1 answer 67 views

Calculate the standard enthalpy change for the vaporization of 25.0 grams of water at 100°C, given that the molar enthalpy of vaporization of water is 40.7 kJ/mol.

answered Feb 3 in Chemical thermodynamics

1 answer 59 views

Calculate the standard enthalpy change for the reaction between [Fe(H2O)6]2+ and 2Cl- ions to produce [FeCl4]2- complex ion given that the enthalpy of formation for [FeCl4]2- is -392 kJ/mol and the enthalpies of hydration for Fe2+ and Cl- ions are -340 kJ/mol and -381 kJ/mol, respectively.

asked Feb 3 in Chemical thermodynamics

1 answer 96 views

What specific functional group is present in compound X as determined by UV-Vis spectroscopy analysis?

asked Jan 31 in Analytical Chemistry

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