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What is the most efficient catalyst to use in the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol, and how does varying the amount of catalyst affect the yield and quality of the final product?

asked Feb 21 in Chemical synthesis by Bernice06378 (1.4k points)

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How does the prediction of chemical reactivity and selectivity differ in traditional computational chemistry methods versus quantum chemistry methods?

asked Feb 22 in Quantum Chemistry by ElvaL9406057 (2.3k points)

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How do the photochemical properties of supramolecular assemblies differ from those of individual molecules and how can this knowledge be applied in the design of novel light-responsive materials?

asked Feb 22 in PhotoChemistry by JaredOliva6 (2.2k points)

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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 by ArleneLeichh (2.1k points)

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How does the pH of a reaction mixture affect the reaction rate of the acid-catalyzed hydrolysis of sucrose?

asked Feb 22 in Chemical kinetics by RaulGalway75 (2.1k points)

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How does the particle size of a gold nanoparticle affect its photochemical properties such as absorbance, emission, and quantum yield under different light sources and intensities?

asked Feb 22 in PhotoChemistry by IsabelleTitu (1.8k points)

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How do the photochemical properties of supramolecular assemblies differ from those of individual molecules and what factors influence their behavior?

asked Feb 22 in PhotoChemistry by MerryGoodsel (1.9k points)

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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 by KariMcCleary (1.5k points)

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What is the mechanism of the nucleophilic acyl substitution reaction between acetic anhydride and aniline?

asked Feb 21 in Organic Chemistry by EloiseGrimm2 (1.9k points)

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What is the order of the reaction if the rate constant of a chemical reaction changes by a factor of 100 when the concentration of reactant is increased by 10 times?

asked Feb 22 in Physical Chemistry by LuisHuntsman (1.6k points)

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What is the optimal reaction conditions (temperature, pressure, and catalyst) for synthesizing polyethylene oxide with a high molecular weight and low polydispersity index from ethylene oxide monomer?

asked Feb 21 in Chemical synthesis by AOVFlorrie80 (1.7k points)

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What is the optimum temperature and concentration of nitric acid necessary for the most efficient and safe preparation of 2,4,6-trinitrotoluene from toluene using the nitration process?

asked Feb 21 in Chemical synthesis by DaisyThwaite (1.9k points)

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How do the photochemical properties of supramolecular assemblies change in the presence of different binding motifs and ligands?

asked Feb 22 in PhotoChemistry by BrentAshcrof (1.5k points)

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How do the photochemical properties of supramolecular assemblies vary with changes in the size and shape of the assemblies?

asked Feb 22 in PhotoChemistry by SelenaRonan (2.2k points)

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What is the optimum temperature and ratio of reactants needed to achieve maximum yield in the synthesis of polyacrylonitrile from acrylonitrile monomer using free-radical polymerization?

asked Feb 22 in Chemical synthesis by NovellaDegot (1.6k points)

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What is the effect of pH on the zeta potential of colloidal particles, and how can this be measured using a zeta potential analyzer?

asked Feb 22 in Surface Chemistry by SilviaKetcha (1.6k points)

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What is the effect of changing the ratio of monomers in a polymer-based biomaterial on its mechanical properties for tissue engineering applications?

asked Feb 20 in Polymer Chemistry by HiramFarrell (1.7k points)

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How do the photochemical properties of coordination compounds depend on the geometry and coordination number of metal ions?

asked Feb 22 in PhotoChemistry by DaleHaveman (2.1k points)

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What is the oxidation state of sulfur in SO2?

asked Feb 22 in Chemical reactions by Vernell30C7 (2.5k points)

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How do the photochemical properties of coordination compounds vary with different metal ions and ligands?

asked Feb 22 in PhotoChemistry by 092347908024 (1.7k points)

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