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What is the corrosion rate of a steel bar in a 1 M solution of sulfuric acid at 25°C, if the bar surface area is 50 cm² and the weight loss of the bar after 24 hours of immersion in the acid is found to be 2.1 grams?

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

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How can we use chemical methods to effectively clean up oil spills and reduce their impact on the environment?

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

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How does the zeta potential of a colloidal solution change as pH is varied from acidic to alkaline conditions and how does this affect the stability of the colloidal system?

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

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What is the pH of a 0.1 M solution of hydrochloric acid (HCl)? (Ka for HCl = very large, essentially 0)

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

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What is the enthalpy change for the dissolution of 10 grams of NaCl in 100 mL of water at 25°C given that the enthalpy of solution of NaCl is -3.9 kJ/mol?

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

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What are the common reasons for the difficulty that chemistry students encounter while trying to understand complex chemical concepts? How can these difficulties be overcome to improve understanding and comprehension of complex chemical concepts?

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

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What is the corrosion rate of iron in a 0.1 M HCl solution at 298 K, given that the corrosion potential is -0.44 V and the current density is 1.2 mA/cm²?

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

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What is the relationship between the magnitude of the zeta potential and the stability of colloidal particles? Use experimental evidence to support your answer.

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

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What are the factors that affect the rate of electron transfer in redox reactions and how do they impact the overall reaction mechanism?

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

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What is the enthalpy change for the combustion of 1 mole of butane (C₄H₁₀) gas (g) under standard conditions?

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

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What are the factors that affect the rate of corrosion of iron in seawater and how can the passivation process be used to reduce the rate of corrosion?

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

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What is the enthalpy of polymerization of polystyrene if 10 grams of styrene monomer undergo complete polymerization in a constant pressure calorimeter and releases 1195 kJ of energy as heat?

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

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What is the enthalpy change for dissolving 10 grams of potassium chloride in 100 mL of water at 25°C if the resulting solution has a concentration of 0.5 M?

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

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What modifications can be made to the chemical structure of polymer-based adhesives and sealants to improve their adhesion and moisture resistance properties?

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

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What is the corrosion current density of Zinc (Zn) metal in a galvanic couple with Copper (Cu) in a 0.1 M KCl electrolyte solution at 25 °C, given that the open circuit potential of the couple is -0.439 V and the polarization resistance is 625 Ω?

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

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What is the vibrational frequency of the carbon-oxygen double bond in formaldehyde, and how does it contribute to the infrared spectrum of the molecule?

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

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How can the Williamson ether synthesis be used to synthesize a symmetrical ether from two different alkyl halides? Provide a stepwise mechanism for the reaction.

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

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What is the enthalpy change when dissolving 5 grams of NaOH in 100 ml of water at 25°C, given that the molar enthalpy of dissolution of NaOH is -44.5 kJ/mol?

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

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What is the amount of heat absorbed by 25 g of ice at -10°C when it is converted to water at 20°C? Given the enthalpy of fusion of ice is 6.01 kJ/mol and the specific heat capacity of water is 4.18 J/g°C.

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

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How does the temperature affect the rate of a gas-phase reaction, and how can Monte Carlo simulations be used to study the reaction at different temperatures?

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

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