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What is the value of the corrosion potential (E_corr) for a silver metal electrode in 0.1M silver nitrate (AgNO3) solution of pH 5.5 and temperature 25°C, assuming the electrode as standard hydrogen electrode (SHE) reference?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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How does the temperature affect the order parameter and phase transition of the nematic phase of a liquid crystal system using Monte Carlo simulations?

asked Feb 28 in Computational Chemistry by TheScientist (138k points)

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What are the four types of chemical reactions? Provide an example of each type and balance each of the chemical equations.

asked Mar 1 in Chemical education by TheScientist (138k points)

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What is the yield of benzocaine obtained from the synthesis reaction of p-aminobenzoic acid and ethanol, and how does the yield vary with changes in the reaction conditions such as temperature, solvent, and reactant ratios?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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What is the percentage yield of a chemical reaction if 12 grams of product are obtained when 20 grams of reactant are used and the theoretical yield is 15 grams?

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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What are the factors that affect the phosphorescence emission of materials in photochemistry?

asked Mar 1 in PhotoChemistry by TheScientist (138k points)

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What are the different types of chemical reactions and their associated equations? Provide examples of each type of reaction and explain how to identify them.

asked Mar 1 in Chemical education by TheScientist (138k points)

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What is the enthalpy of combustion of ethane (C2H6), given that the complete combustion of 2.00 grams of ethane in excess oxygen produces 11.2 kJ of heat?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the heat capacity of a 50 g copper block when heated from 25°C to 95°C, given that the specific heat capacity of copper is 0.385 J/g·°C? Calculate the amount of heat energy required to raise the temperature of the copper block by 70°C.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the heat of sublimation for solid carbon dioxide (dry ice) if 100 grams of it sublimes at a constant pressure of 1 atm and absorbs 25.2 kJ of heat?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What methods can be used to reduce the environmental impact of industrial waste disposal, and how do these methods compare in terms of effectiveness and feasibility in different industries and geographic locations?

asked Mar 1 in Environmental Chemistry by TheScientist (138k points)

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What is the theoretical yield of 2,4-dinitrophenylhydrazine that can be obtained from the reaction between 0.25 grams of hydrazine and 0.45 grams of 2,4-dinitrochlorobenzene, assuming a 100% conversion efficiency and complete reaction?

asked Mar 1 in Chemical synthesis by TheScientist (138k points)

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What is the standard enthalpy change for the vaporization of 50.0 g of water at a temperature of 298.15 K and a pressure of 1 atm? The molar enthalpy of vaporization of water is 40.7 kJ/mol.

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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What is the change in equilibrium constant for the formation of a complex ion when the temperature is increased from 25°C to 50°C, given that the enthalpy of reaction is -20 kJ/mol and the entropy change is 80 J/(mol·K)?

asked Mar 1 in Chemical equilibrium by TheScientist (138k points)

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What is the heat of mixing when 25 mL of 1.0 M HCl solution is added to 25 mL of 1.0 M NaOH solution at 25°C? The heat of neutralization for the reaction between HCl and NaOH is -57.1 kJ/mol.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the change in entropy when 2 moles of H2 (g) react with 1 mole of O2 (g) to form 2 moles of H2O (l) at a constant temperature of 298 K? (Assume standard molar entropy values for the reactants and products)

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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What are the key factors that make it difficult for students to understand the periodic table and chemical elements, and what strategies can be employed to overcome these difficulties and improve comprehension?

asked Mar 1 in Chemical education by TheScientist (138k points)

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How does the variation of concentration of a reactant affect the reaction rate and ultimately the profitability of the reaction in the synthesis of a specific product?

asked Feb 28 in Chemical kinetics by TheScientist (138k points)

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How does the variation in pH affect the rate of photochemical reactions in a certain chemical reaction involving light and a given set of reactants?

asked Feb 28 in PhotoChemistry by TheScientist (138k points)

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What are the optimal reaction conditions for the synthesis of p-nitroaniline from aniline and nitric acid, and how can the purity of the final product be measured and improved?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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