Recent activity by LukasKlinger

1 answer 87 views

How does the rate of a photochemical reaction change with the increase in temperature and what factors contribute to this change?

asked Feb 22 in PhotoChemistry

1 answer 74 views

What is the optimal reaction conditions, including temperature, pressure, and catalyst, required for the efficient synthesis of polyvinyl chloride from vinyl chloride monomer?

answered Feb 21 in Chemical synthesis

1 answer 76 views

What is the impact of temperature on the solubility of a solute in a solvent? Provide detailed explanation and experimental evidence to support your answer.

answered Feb 20 in Physical Chemistry

1 answer 80 views

What is the effect of different light intensities on the reaction rate of the decomposition of hydrogen peroxide catalyzed by potassium iodide at room temperature?

asked Feb 19 in Chemical kinetics

1 answer 77 views

What factors affect the photoluminescence efficiency of phosphorescent materials and how can we optimize them for various applications?

asked Feb 14 in PhotoChemistry

1 answer 81 views

How do persistent organic pollutants (POPs) enter the food chain, and what are the potential health and environmental impacts of bioaccumulation of POPs in different trophic levels?

asked Feb 14 in Environmental Chemistry

1 answer 96 views

How can we optimize the mechanical properties (e.g. elasticity, strength) of a polymer for use in a specific biomedical application, such as a tissue scaffold or drug delivery device?

answered Feb 14 in Materials Chemistry

1 answer 63 views

What is the role of metal ions in the structure and function of the metalloenzymes and metalloproteins and how do coordinative bonds between the metal ions and amino acid residues affect enzyme/protein activity?

answered Feb 13 in Coordination Chemistry

1 answer 99 views

What are the differences and similarities in the electronic structures of lanthanide and actinide complexes? Provide examples and explain how these differences can impact the chemical and physical properties of the compounds.

answered Feb 13 in Coordination Chemistry

1 answer 108 views

How can the synthesis of carbon nanotubes be optimized for higher yield and purity using novel synthetic methods and characterization techniques?

answered Feb 11 in Materials Chemistry

1 answer 145 views

How can the sensitivity and selectivity of a polymer-based sensor be improved in order to detect specific molecules in complex mixtures?

answered Feb 10 in Polymer Chemistry

1 answer 200 views

How can the process design and optimization be used to improve the efficiency and sustainability of the production of polymers in chemical engineering?

asked Feb 10 in Chemical engineering

1 answer 96 views

How can the infrared (IR) spectroscopy technique be used to distinguish between ethanol and methanol?

answered Feb 7 in Organic Chemistry

1 answer 87 views

How can chemistry teachers effectively engage their students in the learning process and provide hands-on experimentation opportunities, given limited resources and funding for materials?

asked Feb 5 in Chemical education

1 answer 155 views

Design a distillation column for the separation of a binary mixture consisting of ethanol and water. The feed mixture contains 40 mol% ethanol and 60 mol% water, and the desired product purity is 95 mol% ethanol. The feed rate is 1000 kg/hr and the column should operate at atmospheric pressure. Calculate the number of theoretical plates required to achieve the desired separation and determine the corresponding height and diameter of the column.

answered Feb 3 in Chemical engineering

1 answer 120 views

Describe the role of the metal ion in the active site of metalloenzymes, using the coordination chemistry principles. Provide examples of metalloenzymes and their relevant metallic centers, and explain how the metal ion contributes to their function.

answered Feb 3 in Coordination Chemistry

1 answer 132 views

How does changing the reactant concentrations affect the reaction rate and ultimately the profitability of a chemical reaction?

answered Feb 3 in Chemical kinetics

1 answer 122 views

How does changing the concentration of reactants affect the selectivity of a chemical reaction with multiple possible products?

asked Feb 3 in Chemical kinetics

1 answer 85 views

Calculate the enthalpy change of the polymerization reaction of ethylene, given that the heat of combustion of ethylene is -1411 kJ/mol and the enthalpy of formation of ethylene is +52.3 kJ/mol. The balanced equation for the polymerization of ethylene is:nC2H4 -> [-C2H4-]nAssume complete polymerization and that the standard enthalpy of formation of the polymer is negligible.

answered Jan 23 in ThermoChemistry

1 answer 154 views

A student conducted an electrolysis experiment using a current of 2 amperes for 30 minutes with a copper sulfate solution. What is the mass of copper deposited on the cathode? The atomic weight of copper is 63.546 g/mol and the Faraday constant is 96,485 C/mol.

answered Jan 22 in ElectroChemistry

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