Recent activity by MavisRevell

1 answer 33 views

What are the resonance structures for the molecule of nitrate ion (NO3-)? Show how the pi electron density is distributed across the atoms in each resonance structure.

answered Feb 21 in Chemical bonding

1 answer 38 views

What effect does the nature of the ligand have on the light absorption properties of a coordination compound?

asked Feb 21 in PhotoChemistry

1 answer 26 views

What is the most stable geometric configuration for a [Fe(CN)6]^-4 ion using ab initio calculations, and how does the presence of a co-ligand, such as H2O or NH3, affect the stability and reactivity of the complex?

asked Feb 21 in Computational Chemistry

1 answer 44 views

How does the chemical composition and structure of luminescent materials affect their photochemical properties, and how can this knowledge be applied to optimize the brightness and efficiency of these materials for various applications?

answered Feb 18 in PhotoChemistry

1 answer 37 views

How does the absorption of light by molecules affect their electronic structure and reactivity in photocatalytic processes?

asked Feb 17 in Quantum Chemistry

1 answer 39 views

How does surface modification of nanoparticles affect their properties and reactivity in various applications?

answered Feb 17 in Surface Chemistry

1 answer 25 views

How can we use structure-based drug design to create new antiviral compounds that target the specific proteins or enzymes involved in viral replication?

asked Feb 14 in Medicinal Chemistry

1 answer 69 views

How can the synthesis of polypropylene from propylene monomer be optimized to increase the yield and ensure sustainability?

answered Feb 11 in Chemical synthesis

1 answer 39 views

How can the coordination chemistry principles of chelation therapy be utilized for the design of a more effective metal chelating agent to treat metal toxicity in the human body?

asked Feb 6 in Coordination Chemistry

1 answer 43 views

How can first principles calculations be used to predict the electronic and magnetic properties of topological materials and provide insights into their potential applications in spintronics and quantum computing?

answered Feb 5 in Quantum Chemistry

1 answer 37 views

How can computational methods in quantum chemistry be used to predict the catalytic activity and selectivity of a particular catalyst for a specific chemical reaction?

asked Feb 5 in Quantum Chemistry

1 answer 80 views

Here's a precise problem for the student to solve: Calculate the standard enthalpy change for the neutralization of 50 mL of 0.10 M hydrochloric acid (HCl) with 50 mL of 0.10 M sodium hydroxide (NaOH) at 25°C, given that the specific heat capacity of the solution is 4.18 J/(g °C) and the density of the solution is 1.00 g/mL.

answered Feb 4 in Chemical thermodynamics

1 answer 54 views

Design a process for the purification of crude acetone obtained from the industrial production of phenol to obtain at least 99% pure acetone. Take into account the initial impurities in the crude acetone and suggest suitable separation techniques to remove them. Specify the equipment and operating conditions required for your proposed purification process.

answered Feb 4 in Chemical engineering

1 answer 73 views

Design a polymer-based sensor for detecting the presence of ethanol in aqueous solutions, and provide a detailed explanation of the principles behind its operation.

asked Feb 4 in Polymer Chemistry

1 answer 71 views

Calculate the standard electrode potential for the redox reaction where Ag(s) is oxidized by Cu2+(aq) to form Ag+(aq) and Cu(s) given that the standard reduction potential for Ag+(aq) + e- → Ag(s) is 0.80 V and for Cu2+(aq) + 2e- → Cu(s) is 0.34 V.

answered Feb 3 in Chemical thermodynamics

1 answer 81 views

What strategies can be used to overcome the challenge of insufficient funding for chemistry education in schools, and how can students actively advocate for increased resources for their chemistry programs?

answered Jan 30 in Chemical education

1 answer 93 views

What is the concentration of iron in a water sample collected from a local lake using voltammetry with a standard potential of -0.44 V?

answered Jan 30 in Analytical Chemistry

1 answer 119 views

What is the concentration of a hydrochloric acid (HCl) solution in moles per liter (M) if 25 mL of a 0.1 M sodium hydroxide (NaOH) solution is required to neutralize 50 mL of the HCl solution?

asked Jan 30 in Analytical Chemistry

1 answer 88 views

Calculate the enthalpy change when 50 ml of 0.2 M sodium chloride solution is mixed with 50 ml of 0.1 M silver nitrate solution. Given the enthalpy of precipitation of silver chloride as -64.8 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 87 views

Calculate the activation energy of a reaction that has a rate constant of 8.23 x 10^-4 s^-1 at 300 K and a rate constant of 1.56 x 10^-2 s^-1 at 350 K.

answered Jan 23 in Chemical kinetics

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