Recent activity by JulianKnetes

1 answer 18 views

How does the size and shape of a metallic nanocluster affect its electronic and optical properties in terms of absorption and emission spectra?

asked 1 day ago in Quantum Chemistry

1 answer 26 views

What are the products of the reaction between sodium hydroxide and hydrochloric acid, and what type of reaction is occurring?

answered 3 days ago in Inorganic Chemistry

1 answer 15 views

What is the mechanism behind the photochemistry of benzene, and how does it lead to the formation of phenol in the presence of UV light?

answered 3 days ago in Physical Chemistry

1 answer 18 views

How does the method of graphene synthesis affect its properties and suitability for electronic devices?

answered 5 days ago in Materials Chemistry

1 answer 29 views

What are the key parameters that influence the efficiency of the polymerization process and how can they be optimized to produce the desired polymer with specific properties?

asked 5 days ago in Chemical engineering

1 answer 33 views

What is the concentration of ammonia and heavy metals in landfill leachate and what is their impact on groundwater quality?

answered Feb 18 in Environmental Chemistry

1 answer 26 views

How does the addition of different dopants (e.g. Mg, Ce, Yb) affect the thermal conductivity and mechanical properties of alumina ceramics intended for use in high-temperature applications?

answered Feb 17 in Materials Chemistry

1 answer 29 views

How can we predict the catalytic activity and selectivity of a given catalyst using quantum chemistry? Please provide examples of catalysts and their predicted performance based on quantum chemistry calculations.

asked Feb 14 in Quantum Chemistry

1 answer 21 views

How do molecular orbital theory and hybridization explain the bonding in complex molecules such as benzene?

asked Feb 13 in Chemical education

1 answer 37 views

How does increasing the pressure affect the equilibrium position in a chemical reaction that involves gases? Provide an example of such a reaction and explain how the equilibrium constant would be affected by the change in pressure.

answered Feb 13 in Chemical equilibrium

1 answer 35 views

What are the effects of chirality on the photochemical properties of a molecule and how can these effects be utilized for applications such as asymmetric synthesis or molecular sensors?

answered Feb 12 in PhotoChemistry

1 answer 46 views

How can the selectivity of polymer-based membranes for water treatment be improved while still maintaining high water permeability?

answered Feb 10 in Polymer Chemistry

1 answer 43 views

How can the quality of the final product in the paint and coatings production process be improved by optimizing the raw material selection and the operating parameters of the equipment used in the process?

asked Feb 10 in Chemical engineering

1 answer 9 views

How can the production process for a specific specialty chemical be optimized to improve its yield and purity, while minimizing energy consumption and waste generation?

asked Feb 10 in Chemical engineering

1 answer 22 views

How can the magnetic properties of a material such as iron oxide nanoparticles be optimized for use in high-density data storage applications?

answered Feb 7 in Materials Chemistry

1 answer 30 views

How can the efficiency of solar cells be improved by using novel materials synthesized through chemical methods, and how can their properties be characterized to ensure their suitability for use in solar cells?

asked Feb 7 in Materials Chemistry

1 answer 48 views

Calculate the standard enthalpy change for the reaction between 50 ml of 0.2 M HCl (aq) and 50 ml of 0.2 M NaOH (aq) at 25°C, given that the specific heat capacity of the combined solution is 4.18 J/g °C and the density of the combined solution is 1.0 g/mL.

answered Feb 3 in Chemical thermodynamics

1 answer 53 views

Calculate the standard enthalpy change for the precipitation reaction: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) Given that the standard enthalpy of formation (∆Hf) for AgNO3(aq), NaCl(aq), AgCl(s), and NaNO3(aq) are -123.1 kJ/mol, -407.3 kJ/mol, -127.0 kJ/mol, and -467.3 kJ/mol respectively.

asked Feb 3 in Chemical thermodynamics

1 answer 59 views

Calculate the standard enthalpy change (in kJ/mol) for the following reaction involving solutions: NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)Given the following enthalpy values:NaOH(aq): -469.2 kJ/mol HCl(aq): -167.2 kJ/mol NaCl(aq): -411.2 kJ/mol H2O(l): -285.8 kJ/mol

answered Feb 3 in Chemical thermodynamics

1 answer 44 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

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