Recent activity by ErickB565479

1 answer 42 views

How does the size and shape of gold nanoparticles affect their photochemical properties?

1 answer 31 views

What is the effect of changing the concentration of a reactant or a product on the reaction rate at equilibrium for the reaction between iodide ion and persulfate ion?

asked Feb 22 in Chemical kinetics

1 answer 36 views

What is the major difference between primary, secondary and tertiary amines? Provide a detailed mechanism to explain the reaction that occurs when a primary amine reacts with carboxylic acid to form an amide.

answered Feb 20 in Organic Chemistry

1 answer 41 views

How does the initial concentration of reactants affect the rate of reaction and the final yield of product in the reaction between potassium permanganate (KMnO4) and oxalic acid (H2C2O4)?

asked Feb 20 in Chemical kinetics

1 answer 31 views

What are the key steps involved in the development of a chemical process for the production of polymers? How do these steps vary depending on the type of polymer being produced and the desired properties of the final product?

asked Feb 19 in Chemical engineering

1 answer 33 views

How does the addition of a catalyst affect the energy barrier of a reaction mechanism and ultimately the rate of reaction, as predicted by density functional theory calculations?

answered Feb 17 in Computational Chemistry

1 answer 36 views

How does the surface tension of a biomembrane affect the diffusion of molecules across the membrane?

asked Feb 17 in Surface Chemistry

1 answer 39 views

How does plasma treatment modify the surface properties of polymeric biomaterials and affect their biocompatibility?

asked Feb 14 in Surface Chemistry

1 answer 30 views

How can we use photochemistry to efficiently degrade persistent organic pollutants (POPs) in contaminated air or water bodies and what are the possible by-products that may form during the process?

asked Feb 14 in PhotoChemistry

1 answer 39 views

How does the application of molecular dynamics simulations aid in the study of protein folding dynamics, and how can the knowledge obtained from these simulations be applied to developing novel therapeutics for protein-misfolding diseases?

asked Feb 13 in Computational Chemistry

1 answer 73 views

How can the understanding of the role of chemistry in society and the economy be improved among the general public and policymakers?

asked Feb 13 in Chemical education

1 answer 100 views

What is the effect of doping on the electrical conductivity of semiconductors used in electronic devices?

asked Feb 12 in Materials Chemistry

1 answer 33 views

How can the design of drugs be optimized to specifically target cancer cells while minimizing harmful effects on healthy cells?

answered Feb 7 in Medicinal Chemistry

1 answer 50 views

How can the chemical properties of certain compounds be modified to enhance their effectiveness in treating inflammatory bowel diseases such as Crohn's disease and ulcerative colitis?

answered Feb 6 in Medicinal Chemistry

1 answer 43 views

Consider the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g)If the reaction mixture initially contains 0.10 mol N2, 0.20 mol H2 and 0.15 mol NH3 at equilibrium at 450 K, and the number of moles of NH3 is increased to 0.25 mol at constant temperature, predict the direction in which the reaction will proceed to reach a new equilibrium.

asked Feb 3 in Chemical equilibrium

1 answer 77 views

Calculate the standard enthalpy change for the following reaction at 25°C given the enthalpies of formation (in kJ/mol) of the compounds involved:CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)Hf(CaCO3) = -1206.9 kJ/molHf(CaCl2) = -795.8 kJ/molHf(CO2) = -393.5 kJ/molHf(H2O) = -285.8 kJ/molHf(HCl) = -92.31 kJ/mol

answered Feb 3 in Chemical thermodynamics

1 answer 51 views

How does changing the pH of a redox reaction affect its equilibrium position? Please provide a specific example of a redox reaction and explain the possible changes in its equilibrium position when the pH is increased or decreased.

answered Feb 3 in Chemical equilibrium

1 answer 56 views

How does changing the metal center in a complex affect its photochemical properties? Compare the photochemical properties of a series of metal complexes with different metal centers under identical conditions.

answered Feb 3 in PhotoChemistry

1 answer 35 views

How can chemistry teachers and schools increase the availability and accessibility of extracurricular activities related to chemistry for their students, despite significant resource constraints and limited funding?

asked Jan 30 in Chemical education

1 answer 108 views

What is the concentration of chloride ions (Cl-) in a sample of Tap Water using capillary electrophoresis?

asked Jan 30 in Analytical Chemistry

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