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Calculate the standard enthalpy change of the dissolution reaction for 5.00 g of NaOH in 100 mL of water, given the molar heat of solution of NaOH as -44.5 kJ/mol.

asked Feb 3 in Chemical thermodynamics by MarilouTafoy (630 points)

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Calculate the standard enthalpy change of reduction for the following reaction: Cu2+(aq) + 2e- -> Cu(s) Given that the standard electrode potential of Cu2+(aq)/Cu(s) is +0.34 V and the standard electrode potential of Ag+(aq)/Ag(s) is +0.80 V.

asked Feb 3 in ThermoChemistry by CorinneMcwho (470 points)

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Calculate the pH of a 0.1 M solution of acetic acid with a dissociation constant (Ka) of 1.8 x 10^-5.

asked Feb 3 in Chemical reactions by NganCollocot (310 points)

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Calculate the pH of a 0.1 M solution of acetic acid (Ka = 1.8 x 10^-5).

asked Feb 3 in Chemical reactions by CarltonMunz3 (210 points)

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How does changing the concentration of reactants affect the reaction rate and the resulting yield in the chemical reaction between sodium thiosulfate and hydrochloric acid?

asked Feb 3 in Chemical kinetics by DorcasBlaylo (550 points)

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Calculate the standard electrode potential for the redox reaction that occurs when a silver electrode is placed in a solution containing 0.1 M Ag+ ions and a platinum electrode is placed in a solution containing 0.1 M H+ ions at standard conditions. The reduction half-reaction for Ag+ is Ag+ (aq) + e- → Ag(s), and the reduction half-reaction for H+ is H+ (aq) + e- → 1/2 H2 (g).

asked Feb 3 in Chemical thermodynamics by DebRuffin757 (410 points)

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Calculate the standard enthalpy change for the neutralization of 50.0 mL of 0.100 M hydrochloric acid with 50.0 mL of 0.100 M sodium hydroxide, assuming that the specific heat capacity of the resulting solution is 4.18 J/g °C and the density of the solution is 1.00 g/mL.

asked Feb 3 in Chemical thermodynamics by HSRZak712052 (430 points)

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Calculate the overpotential of an electrochemical cell where Zinc metal is used as an anode and Copper metal as a cathode. The concentration of Zinc ions in the half-cell is 1 M and Copper ions in the half-cell is 0.1 M. The temperature of the system is 25°C. (Given: Standard Reduction Potentials - Zn²⁺ + 2e⁻ → Zn(s) = -0.76 V and Cu²⁺ + 2e⁻ → Cu(s) = +0.34 V)

asked Feb 3 in ElectroChemistry by ElyseDyh218 (410 points)

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Calculate the standard enthalpy change for the neutralization of 25.0 mL of 1.0 M hydrochloric acid (HCl) with 25.0 mL of 1.0 M sodium hydroxide (NaOH) solution at 25°C, given that the specific heat capacity of the solutions is 4.18 J/g°C, and the density of the solutions is 1.00 g/mL.

asked Feb 3 in Chemical thermodynamics by WillyMais08 (290 points)

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Calculate the standard electrode potential for the reaction Ag+ (aq) + Cu (s) → Ag (s) + Cu2+ (aq) given that the standard electrode potentials for Ag+ (aq) + e- → Ag (s) and Cu2+ (aq) + 2e- → Cu (s) are 0.80 V and 0.34 V respectively.

asked Feb 3 in Chemical thermodynamics by SadyeCorriga (510 points)

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Calculate the overpotential of a lead electrode in contact with a solution containing [Pb2+] = 0.001 M when the temperature is 298 K. Given that the standard potential of the Pb2+ / Pb electrode is -0.13 V and the exchange current density is 0.015 A/m2.

asked Feb 3 in ElectroChemistry by CassandraVal (710 points)

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How does changing the concentration of reactants affect the reaction rate and ultimately the reaction yield in a chemical reaction?

asked Feb 3 in Chemical kinetics by AllisonGho33 (290 points)

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Calculate the standard enthalpy change for the reaction between 50.0 mL of 0.200 M HCl(aq) and 50.0 mL of 0.300 M NaOH(aq) at 25°C. The heat capacity of the calorimeter is 9.60 J/°C and the temperature change observed is 4.00°C. Also, assume that the density of both solutions is 1.00 g/mL and that the heat capacity and density of the final solution are the same as that of water.

asked Feb 3 in Chemical thermodynamics by BennettNorri (470 points)

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Calculate the standard electrode potential for the following redox reaction under standard conditions: Fe3+ + 3e- → Fe(s)

asked Feb 3 in Chemical thermodynamics by LashayUtter9 (410 points)

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Calculate the standard enthalpy change for the sublimation of 5 moles of solid iodine (I2) given the following data:- Enthalpy of fusion of iodine = 15.52 kJ/mol- Enthalpy of vaporization of iodine = 41.57 kJ/mol

asked Feb 3 in Chemical thermodynamics by AgnesLenk563 (370 points)

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What is the effect of changing the concentration of reactants on the rate of a chemical reaction and how does it impact the sustainability of the reaction?

asked Feb 3 in Chemical kinetics by FUZTresa0215 (430 points)

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Calculate the standard electrode potential for a silver electrode in contact with a silver ion solution of concentration 0.010 M. The reduction half-equation is Ag+ + e- → Ag.

asked Feb 3 in ElectroChemistry by WinifredCalk (290 points)

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1 answer 36 views

What is the effect of changing the size of the incoming ligand on the rate of substitution in a coordination complex, and how does it relate to the steric hindrance of the complex?

asked Feb 3 in Coordination Chemistry by TanyaPridgen (490 points)

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1 answer 23 views

Calculate the standard enthalpy of formation for carbon dioxide (CO2) given the following information: ΔHf° of CO = -26.4 kJ/mol, ΔHf° of O2 = 0 kJ/mol, and ΔH°rxn for the combustion of carbon to form CO2 is -393.5 kJ/mol.

asked Feb 3 in Chemical thermodynamics by ChristalFurm (410 points)

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Calculate the standard free energy change for the reaction of HCl with MnO2 to form MnCl2 and H2O at a temperature of 298 K, given that the standard reduction potentials are E°(MnO2/MnCl2)=-0.13 V and E°(H2O/HCl)=1.23 V.

asked Feb 3 in Chemical thermodynamics by WernerHill64 (450 points)

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