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What is the effect of pH on the electrokinetic potential of a positively charged colloidal particle in an aqueous solution? Provide an explanation based on the theory of double layer formation.

asked Feb 20 in Surface Chemistry by Lowell36338 (1.9k points)

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How does temperature affect the selectivity of a reaction with regards to Product A and Product B when using a specific catalyst?

asked Feb 20 in Chemical kinetics by JamiFreame70 (1.7k points)

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What is the effect of varying pH levels (acidic, neutral, basic) on the rate of photochemical reactions of organic compounds? Specifically, how does pH impact the rate of a photochemical reaction between an aromatic compound and a halogen molecule?

asked Feb 20 in PhotoChemistry by Benjamin55Q0 (2.1k points)

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What is the electrical conductivity of sodium chloride in water at various concentrations and temperatures? How does the conductivity change with the concentration of the salt and the temperature of the solution?

asked Feb 20 in Inorganic Chemistry by HermineOverb (2.1k points)

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What is the critical micelle concentration of sodium dodecyl sulfate in water at room temperature and how does the addition of an electrolyte affect the critical micelle concentration?

asked Feb 19 in Surface Chemistry by RosalineRigg (1.9k points)

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What is the equilibrium constant for the reaction between ethanoic acid and water, given that the dissociation constant (Ka) for ethanoic acid is 1.8 x 10^-5 at 25°C?

asked Feb 20 in Chemical equilibrium by VerleneSchut (1.7k points)

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What is the equilibrium constant expression for the following redox reaction at standard conditions: Fe2+(aq) + Cu(s) ⇌ Fe3+(aq) + Cu2+(aq)

asked Feb 20 in Chemical equilibrium by JeannetteNun (1.6k points)

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What is the effect of different polymer-based packaging materials on the environment and how can we design more sustainable packaging materials?

asked Feb 19 in Polymer Chemistry by JEAMolly3713 (2.3k points)

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What is the effect of varying the printing temperature on the mechanical properties of a 3D printed polymer, and how can these properties be optimized for a specific application such as prosthetic devices or industrial tooling?

asked Feb 20 in Materials Chemistry by MyrnaFaerber (1.8k points)

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What is the equilibrium constant expression for the dissociation of acetic acid, CH3COOH, in water? Calculate the equilibrium constant value given that the pH of the solution is 4.5 and the initial concentration of acetic acid is 0.1 M.

asked Feb 19 in Chemical equilibrium by HalleySomers (1.8k points)

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What is the effect of various metals on the photochemical properties (such as excited state lifetime and reactivity) of metal complexes under UV irradiation?

asked Feb 20 in PhotoChemistry by JackH2065356 (1.1k points)

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What is the effect of different monomer ratios on the physical properties of a polymer?

asked Feb 19 in Physical Chemistry by Roseanna7424 (1.6k points)

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What is the effect of temperature on the rate of the reaction between hydrochloric acid and magnesium ribbon?

asked Feb 20 in Chemical kinetics by Indira29O642 (1.7k points)

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What is the electronegativity difference between a chlorine atom (Cl) and a sodium atom (Na)? Show your calculations and explain what this difference tells us about the type of chemical bond formed between these two elements.

asked Feb 20 in Chemical bonding by PhilipPrisco (1.9k points)

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What is the effect of temperature on the adsorption of hydrogen gas on a solid surface of activated carbon? Provide experimental evidence to support your answer.

asked Feb 20 in Surface Chemistry by MaximoVardon (1.9k points)

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What is the effect of degree of polymerization on the tensile strength and viscosity of a polymer?

asked Feb 19 in Physical Chemistry by TonyaCombs22 (1.8k points)

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What is the effect of varying the concentration of reactants on the rate of the reaction between sodium thiosulphate and hydrochloric acid, and how does this affect the reaction efficiency?

asked Feb 20 in Chemical kinetics by EttaKee54894 (2.1k points)

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What is the mechanism of Electrophilic addition reaction of water with propene, and what are the products formed?

asked Feb 20 in Organic Chemistry by VioletteM27 (2.1k points)

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What are the key factors that affect the efficiency of polymer-based photovoltaic materials and how can they be optimized to improve their performance?

asked Feb 20 in Polymer Chemistry by JurgenJohnst (1.6k points)

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What is the effect of solvent molecules on the stability and dynamics of the DNA-protein complex during molecular dynamics simulations?

asked Feb 19 in Computational Chemistry by SZVRamon1645 (2.4k points)

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