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What is the pH of a solution with 0.1 M HNO3 (nitric acid)?

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

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Using spectroscopic data, calculate the equilibrium constant (K) for the formation of the complex ion Cu(NH3)42+ in a solution containing 0.02 M Cu2+ and 0.5 M NH3 at room temperature.

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

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What is the Gibbs free energy change for the electrochemical reaction involving the oxidation of copper, Cu, to copper (II) ions, Cu2+, in a solution of CuSO4 with a potential of 0.78 V at 25°C?

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

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What is the pH of a 0.1 M solution of hydrochloric acid (HCl) measured using a pH meter at 25°C?

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

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What is the pH of a 0.1 M solution of hydrochloric acid (HCl) at 25°C using a pH meter?

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

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What is the standard enthalpy change of the dissolution of 10 grams of sodium chloride in 250 milliliters of water at 25°C, given that the molar enthalpy of dissolution of sodium chloride is -3.9 kilojoules per mole?

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

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In an experiment, 50 mL of 1 M HCl solution was mixed with 50 mL of 1 M NaOH solution. The temperature change was recorded as 10°C. Calculate the standard enthalpy change of neutralization for the reaction between HCl and NaOH.

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

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How do you design a chemical reactor to produce 10 kg/hr of product X with a yield of at least 90%, given a feed of 100 kg/hr of reactants A and B, and assuming a first-order reaction?

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

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What is the heat of sublimation of iodine, given that it has a vapor pressure of 10 mmHg at -10°C and a normal boiling point of 184.35°C?

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

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What is the heat of neutralization when 50 mL of 2.0 M hydrochloric acid reacts with 50 mL of 2.0 M sodium hydroxide solution? The specific heat capacity of the solution is 4.18 J/g °C, and the temperature change is recorded as 8.2 °C during the reaction.

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

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What is the standard enthalpy change for the transition of ice to water if 50 grams of ice is heated from -10 °C to 50 °C? The molar mass of water is 18 g/mol and the specific heat capacity of ice and water are 2.09 J/g°C and 4.18 J/g°C, respectively.

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

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What is the difference in energy between the ground state and first excited state of a H2 molecule using the time-dependent Schrödinger equation and what is the resulting wavelength of light absorbed or emitted during the transition?

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

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What is the formal charge of sulfur (S) in SO4^(2-)?

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

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What would be the theoretical yield of 2,4-dinitrophenol if 10 grams of phenol was used in the preparation and 85% yield was obtained?

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

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What are the regulatory mechanisms that control the utilization of glucose in the human body during periods of rest and exercise?

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

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What is the standard enthalpy change for the reaction 2CO(g) + O2(g) → 2CO2(g) at standard conditions, given that the standard enthalpy of formation for CO, O2, and CO2 are -110.5 kJ/mol,-393.5 kJ/mol, and -393.5 kJ/mol, respectively?

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

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What is the rate constant for the reaction A + B → C if the activation energy is 50 kJ/mol and the temperature is 300 K? Also, predict the order of reaction based on the mechanism proposed.

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

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What is the standard enthalpy change for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) in aqueous solutions when 25 mL of 2.0M HCl is mixed with 50 mL of 1.0M NaOH at 25⁰C and atmospheric pressure?

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

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What is the pH of a solution with a hydrogen ion concentration of 4.2 x 10^-5 M? Use a pH meter to determine the pH of the solution and compare it to the theoretical value calculated using the Henderson-Hasselbalch equation.

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

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What is the equilibrium constant (Kc) for the reaction between potassium permanganate (KMnO4) and sulfur dioxide (SO2) in aqueous solution, given that sulfur dioxide is a weak reducing agent? Calculate the value of Kc at a temperature of 298 K.

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

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