Recent activity by SelinaOmar8

1 answer 30 views

What is the effect of increasing the concentration of the reaction product on the rate of reaction, using the reaction between hydrogen peroxide and potassium iodide as an example?

asked 6 days ago in Chemical kinetics

1 answer 20 views

What is the appropriate reaction conditions and stepwise procedure for the preparation of 2-chloro-4-nitroaniline from aniline and chlorine gas in the laboratory?

answered Feb 22 in Chemical synthesis

1 answer 18 views

How does the photochemical behavior of transition metal complexes vary with respect to their coordination geometry? Provide examples of different coordination geometries and their corresponding photochemical properties.

asked Feb 22 in PhotoChemistry

1 answer 27 views

How does the molecular weight of a polymer affect its mechanical properties when used in 3D printing?

answered Feb 21 in Materials Chemistry

1 answer 28 views

What is the mechanism of passivation on the surface of stainless steel and what factors influence its effectiveness in preventing corrosion?

asked Feb 20 in Surface Chemistry

1 answer 27 views

How does the geometry of a molecule affect its electronic structure and the distribution of molecular orbitals?

asked Feb 20 in Quantum Chemistry

1 answer 27 views

What is the equilibrium constant (Kc) expression for the following chemical equation: 2NO2(g) ⇌ N2O4(g)? Given the concentration of NO2 to be 0.025 mol/L and the concentration of N2O4 to be 0.0105 mol/L at equilibrium, calculate the value of Kc.

answered Feb 20 in Chemical reactions

1 answer 27 views

What is the effect of substrate concentration on the rate of enzyme activity, and how does the presence of an inhibitor affect this relationship in Enzyme kinetics?

answered Feb 19 in BioChemistry

1 answer 23 views

What is the critical micelle concentration (CMC) of sodium lauryl sulfate (SLS) in water at room temperature and what factors affect its value?

answered Feb 19 in Surface Chemistry

1 answer 29 views

What is the effect of concentration and temperature on the conductivity of a sodium chloride (NaCl) solution?

asked Feb 19 in Inorganic Chemistry

1 answer 19 views

How does the concentration of the catalyst affect the reaction rate of the decomposition of hydrogen peroxide?

answered Feb 18 in Chemical kinetics

1 answer 31 views

What are the key factors that influence the choice of synthesis method for the preparation of metal-organic frameworks, and how can these factors be optimized to achieve the desired properties and characteristics of the resulting material?

asked Feb 18 in Materials Chemistry

1 answer 28 views

What is the activation energy for the reaction between zinc and hydrochloric acid in an electrochemical cell at a temperature of 25°C given that the rate constant is 2.5 x 10^-3 M/s and the activation energy is 40 kJ/mol?

answered Feb 17 in ElectroChemistry

1 answer 38 views

How does the acidity/basicity of an ionic liquid affect its electrical conductivity and viscosity?

answered Feb 17 in Physical Chemistry

1 answer 29 views

What is the mechanism behind the enhancement of Raman signals in Surface-enhanced Raman spectroscopy (SERS)?

asked Feb 17 in Surface Chemistry

1 answer 33 views

What factors contribute to the stability of inorganic compounds and how do these factors affect the compound's structure and reactivity?

asked Feb 14 in Inorganic Chemistry

1 answer 27 views

How can we predict the crystal structure of inorganic solids based on their chemical composition and physical properties?

asked Feb 14 in Inorganic Chemistry

1 answer 37 views

How does human excess nutrient inputs contribute to eutrophication in aquatic ecosystems, and what are the potential consequences for water quality and aquatic life?

answered Feb 13 in Environmental Chemistry

1 answer 42 views

How does the excessive use of fertilizers and its subsequent run-off contribute to eutrophication, and what are the potential impacts and remedial measures that can be taken to prevent it in aquatic ecosystems?

asked Feb 13 in Environmental Chemistry

1 answer 34 views

What is the effect of enzyme inhibition on the flux of a metabolic pathway, and how is this affected by the concentration of the inhibitor and the substrate?

answered Feb 13 in BioChemistry

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