Recent questions in Chemistry

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What is the maximum power output of a galvanic cell consisting of a zinc electrode and a copper electrode, with a concentration of 0.1 M Zn2+ and 0.01 M Cu2+? Assume a standard hydrogen electrode (SHE) as the reference electrode and a temperature of 25°C.

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

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What is the maximum adsorption capacity of a Langmuir adsorbent if the equilibrium constant (K) is 0.05 L/mmol and the concentration of adsorbate (C) is 0.02 mmol/L at 298 K? The surface area of adsorbent used in the experiment is 0.4 m²/g.

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

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What is the maximum achievable monolayer coverage of a gas on a solid surface at a temperature of 25°C and a pressure of 1 atmosphere, given that the Langmuir constant is 0.05 L/mol?

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

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1 answer 72 views

How much mass of silver (Ag) will be deposited onto a cathode during the electrolysis of a silver nitrate (AgNO3) solution using a current of 2.5 A for 20 minutes? The molar mass of silver is 107.868 g/mol and the Faraday constant is 96,485 C/mol.

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

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What is the mass of copper deposited on a cathode when a current of 5A is applied for 1 hour in a copper sulfate solution with a concentration of 0.5M? (Molar Mass of Cu: 63.55 g/mol and Faraday's constant: 96,485 C/mol)

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

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What is the mass of copper deposited on the cathode when a current of 5 A is passed through a solution of copper (II) sulfate for 2 hours? Given that the atomic mass of copper is 63.5 g/mol and the Faraday constant is 96485 C/mol.

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

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1 answer 85 views

What is the mass of aluminum metal that can be deposited by passing a current of 5.0 A through an Al(NO3)3 solution for 45 minutes? (Assume 100% efficiency and a Faraday constant of 96,500 C/mol.)

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

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1 answer 84 views

What is the mass of 2,4-dinitrophenol that can be obtained from 5 grams of phenol and excess nitric acid using the preparation method to synthesize 2,4-dinitrophenol?

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

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1 answer 82 views

What is the magnetic moment of a complex formed between iron(III) ion and ethylenediamine ligand (en) with a coordination number of 6?

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

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1 answer 87 views

What is the calculated magnetic moment of iron(III) oxide (Fe2O3) at room temperature using an experimental molar susceptibility of 5.48 × 10^-6 cm^3/mol?

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

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1 answer 80 views

What is the magnetic moment of a tetrahedral complex with four ligands, each containing one unpaired electron, coordinated to a central transition metal ion with a d⁴ electron configuration?

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

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What is the magnetic moment of a molecule with a given geometry and electron configuration?

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

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What is the lattice energy of sodium chloride (NaCl) given that the distance between the sodium and chloride ions is 2.82 Å and the charges on the ions are +1 and -1 respectively?

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

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1 answer 108 views

What is the calculated lattice energy of NaCl if the distance between the Na+ and Cl- ions in the crystal lattice is 236 pm and the Madelung constant is 1.748?

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

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1 answer 72 views

What is the lattice energy of NaCl(s) at 25°C given that the enthalpy of formation of NaCl(s) is -411.2 kJ/mol, the enthalpy of sublimation of Na(s) is 107.29 kJ/mol, and the first ionization energy of Na(g) is 495.8 kJ/mol?

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

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1 answer 80 views

What is the lattice energy of magnesium oxide (MgO) given that the ionization energy of Mg is 738 kJ/mol, the electron affinity of O is -141 kJ/mol, and the distance between the ions in MgO is 2.1 Å? Show your work and units.

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

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1 answer 77 views

What is the lattice energy of Calcium oxide (CaO)? Calculate the lattice energy using Born-Haber cycle and explain the factors that affect the lattice energy of CaO.

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

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1 answer 72 views

What is the lattice energy of CaF2 if the distance between calcium and fluoride ions in the crystal lattice is 2.40 Å and the charges on calcium and fluoride ions are +2 and -1, respectively?

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

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1 answer 70 views

What is the lattice energy of CaF2 in kilojoules per mole given that the distance between the calcium ion and fluoride ion is 2.01 Å and the charges on the ions are +2 and -1 respectively?

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

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1 answer 66 views

What is the lattice energy of CaCl2 given that the crystal has a distance of 2.80 Angstroms between the Ca2+ and Cl- ions and the charge on each ion is +2 and -1 respectively?

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

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