Recent activity by KariMcCleary

1 answer 81 views

What is the effect of increasing the pH on the equilibrium position of the redox reaction between iodine and iodide ions?

asked Feb 24 in Chemical equilibrium

1 answer 82 views

How does the primary structure of a protein influence its folding and three-dimensional structure? Explain the role of various types of interactions such as hydrogen bonds, disulfide bonds, and hydrophobic interactions in the folding process.

answered Feb 22 in BioChemistry

1 answer 80 views

What is the optimized reaction condition, such as temperature, concentration, and catalyst, for producing polyvinyl alcohol with a high molecular weight from vinyl acetate monomer?

asked Feb 22 in Chemical synthesis

1 answer 76 views

What is the enthalpy of ionization for a lithium atom when it loses one electron to form a Li+ ion in a gas phase? Given that the energy required to remove an electron from a gaseous Li atom is 520 kJ/mol.

asked Feb 20 in ThermoChemistry

1 answer 79 views

What is the difference in the boiling points of a primary, secondary, and tertiary alcohol with the same molecular weight? Provide an explanation based on intermolecular forces.

answered Feb 17 in Organic Chemistry

1 answer 82 views

How does the active site of an enzyme contribute to catalysis, and can computational models accurately predict and optimize enzyme activity through modifications to the active site?

answered Feb 17 in Computational Chemistry

1 answer 77 views

How do supramolecular assemblies affect the photochemical properties of organic compounds and how can this phenomenon be utilized in inorganic chemistry?

asked Feb 17 in PhotoChemistry

1 answer 74 views

What polymers can be used to develop superabsorbent materials with high water retention capacity and how can their properties be optimized for specific applications?

asked Feb 14 in Polymer Chemistry

1 answer 135 views

How can we explain the role of chemistry in everyday life to a non-science person? Provide three specific examples to illustrate your explanation.

asked Feb 12 in Chemical education

1 answer 86 views

How can the knowledge of the mechanism of photochemical reactions in organic compounds be used to predict the products formed and optimize reaction conditions for improved yield?

asked Feb 7 in PhotoChemistry

1 answer 103 views

How can the conductivity and carrier mobility of a polymer-based electronic material be optimized to improve its performance as a semiconductor in electronic devices?

asked Feb 6 in Polymer Chemistry

1 answer 83 views

Calculate the standard enthalpy change for the phase transition reaction of solid carbon dioxide (dry ice) at -78.5°C to gaseous carbon dioxide at 1 atm and 25°C given that the enthalpy of formation of solid carbon dioxide and gaseous carbon dioxide are -393.5 kJ/mol and -393.5 kJ/mol, respectively.

asked Feb 3 in Chemical thermodynamics

1 answer 129 views

Calculate the reaction quotient (Qc) for the following reaction at 298 K and 1 atm: 2 NO2(g) + F2(g) ⇌ 2 NO2F(g)Given the molar concentrations of reactants and products are [NO2] = 0.25 M, [F2] = 0.15 M, and [NO2F] = 0.10 M at equilibrium.

answered Feb 3 in Chemical thermodynamics

1 answer 160 views

What is the effect of changing the orientation of reactant molecules on the rate of a chemical reaction?

answered Feb 3 in Chemical kinetics

1 answer 161 views

What is the effect of changing the concentration of the reaction intermediate on the overall rate of a chemical reaction?

answered Feb 3 in Chemical kinetics

1 answer 162 views

What is the activation energy and reaction rate constant for the Cl + CH4 -> HCl + CH3 reaction at 298 K, calculated using quantum chemical methods?

asked Jan 31 in Computational Chemistry

1 answer 153 views

How does an increase in pH affect the equilibrium position of the reaction between acetic acid and acetate ions? Provide a detailed explanation using Le Chatelier's principle.

answered Jan 31 in Chemical equilibrium

1 answer 134 views

What is the concentration of iron (II) in a sample of water collected from a local stream, given that the absorbance of the sample is 0.35 at a wavelength of 565 nm? The iron (II) ions form a complex with 1,10-phenanthroline, which has a molar extinction coefficient of 7.58 x 10^3 L mol^-1 cm^-1 at the same wavelength.

asked Jan 30 in Analytical Chemistry

1 answer 139 views

What is the concentration of copper (II) ions present in a water sample collected from a polluted river using polarography?

answered Jan 30 in Analytical Chemistry

1 answer 99 views

Calculate the Gibbs free energy change for the combustion of methane gas to produce carbon dioxide and water vapor at a temperature of 298K and a pressure of 1 atm, given the equation:CH4(g) + 2O2(g) -> CO2(g) + 2H2O(g) ΔG°f = -394.36 kJ/mol (CO2); ΔG°f = -237.13 kJ/mol (H2O); ΔG°f = -50.8 kJ/mol (CH4); ΔG°f = 0 kJ/mol (O2)

answered Jan 23 in Chemical thermodynamics

Recent activity by KariMcCleary

Categories