Recent activity by ArleneLeichh

1 answer 33 views

What is the mechanism for the preparation of 2,4-dichloronitrobenzene from nitrobenzene and chlorine gas, and what are the optimum conditions (temperature, pressure, and concentration) necessary for the reaction to take place efficiently?

asked Feb 22 in Chemical synthesis

1 answer 34 views

What is the optimized temperature and reaction conditions for the synthesis of polystyrene from styrene monomers using free radical polymerization?

asked Feb 22 in Chemical synthesis

1 answer 37 views

What is the most efficient protecting group strategy for selectively protecting the primary alcohol in a mixture of primary and secondary alcohols during a synthesis reaction?

asked Feb 21 in Organic Chemistry

1 answer 36 views

What is the most efficient and cost-effective method for producing a specific fragrance compound in large quantities using chemical engineering principles?

asked Feb 21 in Chemical engineering

1 answer 32 views

What is the mechanism behind the energy transfer process that occurs during a chemical reaction between two molecules, and how does it affect molecular dynamics?

answered Feb 20 in Quantum Chemistry

1 answer 12 views

What is the effect of varying temperature on the reaction rate and reaction sustainability between two solutions of sodium thiosulphate and hydrochloric acid?

answered Feb 20 in Chemical kinetics

1 answer 37 views

How does the color of a dye or pigment change when exposed to different wavelengths of light, and what are the underlying photochemical mechanisms?

answered Feb 18 in PhotoChemistry

1 answer 62 views

How does increasing temperature affect the rate of a chemical reaction between sodium thiosulfate and hydrochloric acid?

answered Feb 13 in Chemical kinetics

1 answer 44 views

How does the structure of hemoglobin influence its function as an oxygen transporter in the human body?

asked Feb 13 in Organic Chemistry

1 answer 56 views

What is the impact of heavy metal contamination in soil on the growth and quality of crops commonly grown in agricultural areas affected by industrial pollution?

answered Feb 13 in Environmental Chemistry

1 answer 38 views

How can the polymerization reaction of styrene monomer be manipulated to achieve different molecular weights and properties in the resulting polystyrene polymer?

asked Feb 10 in Chemical synthesis

1 answer 34 views

How can chemistry students effectively supplement limited opportunities for hands-on experimentation in order to enhance their understanding of chemical concepts and processes?

asked Feb 4 in Chemical education

1 answer 39 views

Determine the equilibrium concentrations of reactants and products for the reaction 2H2(g) + O2(g) ⇌ 2H2O(g) at 500K when initial concentrations of H2 and O2 are 0.2M and 0.1M respectively, and the equilibrium constant (Kc) is 4.67 x 10^3.

answered Feb 4 in Chemical equilibrium

1 answer 34 views

Design a novel biodegradable polymer and investigate its synthesis using sustainable and green chemistry practices.

answered Feb 4 in Polymer Chemistry

1 answer 27 views

Consider the reaction:$$\mathrm{N_2(g) + 3H_2(g) <=> 2NH_3(g)}$$At a certain temperature, the equilibrium constant $K_c$ for this reaction is $5.6 \times 10^{-5}$. If a reaction vessel initially contains only $\mathrm{0.10\,mol}$ of $\mathrm{N_2}$ and $\mathrm{0.20\,mol}$ of $\mathrm{H_2}$, what will be the equilibrium concentrations of $\mathrm{N_2}$, $\mathrm{H_2}$, and $\mathrm{NH_3}$ once the reaction reaches equilibrium?

answered Feb 3 in Chemical reactions

1 answer 70 views

Consider a solution of gas X in contact with a solid surface at a constant temperature. The Langmuir adsorption isotherm for this system is represented by the equation /= _/(1+), where is the partial pressure of gas X, is the volume of the gas, _ is the saturation pressure of the gas, and is the Langmuir adsorption constant. Suppose a student conducts an experiment to investigate the Langmuir adsorption isotherm for gas X on a particular solid surface. They measure the partial pressure of the gas at various volumes and obtain the following results: (mL/g) : 2.0 2.5 3.0 3.5 4.0 (atm) : 0.2 0.4 0.6 0.8 1.0 Using these values, what is the Langmuir adsorption constant, , for the given system?

asked Feb 3 in Surface Chemistry

1 answer 100 views

Calculate the standard enthalpy change for the following reaction involving liquids at 298 K: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)Given the standard enthalpies of formation of C2H5OH(l), CO2(g) and H2O(l) are −277.6 kJ/mol, −393.5 kJ/mol and −285.8 kJ/mol respectively.

asked Feb 3 in Chemical thermodynamics

1 answer 61 views

Calculate the standard electrode potential of the electrode in the given electrochemical cell: Fe3+(aq) + 3e- → Fe(s) E°= -0.04V Ag+(aq) + e- → Ag(s) E°= 0.80V

answered Feb 3 in ElectroChemistry

1 answer 85 views

How does changing the pH of a redox reaction affect the equilibrium position and what factors determine whether the reactants or products are favored? Provide an example of a redox reaction and calculate the equilibrium constant under different pH conditions to illustrate the concept.

asked Feb 3 in Chemical equilibrium

1 answer 99 views

What is the coordination environment of the metal center in the active site of the enzyme carbonic anhydrase (CA)? How does the coordination environment affect the enzyme's catalytic activity? Support your answer with relevant examples and experimental evidence from the literature.

asked Jan 31 in Coordination Chemistry

Recent activity by ArleneLeichh

Categories