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Given the following electrochemical reaction: Cu(s) + 2 Ag+(aq) → Cu2+(aq) + 2 Ag(s)Calculate the cell potential at standard conditions (298 K, 1 atm, 1 M concentrations).

asked Feb 4 in ElectroChemistry by ChasityBelli (2.2k points)

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Given the following electrochemical equation:Cu(s) | Cu²⁺(aq, 0.0100 M) || Cr³⁺(aq, 1.00 M) | Cr(s)At 298 K, the standard reduction potential for Cu²⁺/Cu is +0.34 V and for Cr³⁺/Cr is -0.74 V. Calculate the equilibrium constant (K) for the above electrochemical reaction.

asked Feb 4 in ElectroChemistry by AlfonsoJanze (1.9k points)

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Given the following data for the electrochemical reaction A + B → C, where A and B are electrons:- The anodic Tafel slope is 50 mV per decade of current density.- The cathodic Tafel slope is 70 mV per decade of current density.Calculate the exchange current density (i0) for the reaction.

asked Feb 4 in ElectroChemistry by CarltonWoote (1.7k points)

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Given the equilibrium reaction: 2NOCl(g) ⇌ 2NO(g) + Cl2(g), if the equilibrium constant (Kc) at 25°C is 2.45 x 10^-3, what will be the new value of Kc if the temperature is increased to 50°C?

asked Feb 4 in Chemical equilibrium by MaeBuchanan (1.7k points)

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Given the equilibrium equation N2(g) + 3H2(g) ⇌ 2NH3(g), if the concentration of N2 is increased by 0.2 M while the temperature is held constant, what will be the effect on the equilibrium concentration of NH3?

asked Feb 4 in Chemical equilibrium by EttaRide758 (1.3k points)

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Given the enthalpy of solution of sodium hydroxide (NaOH) is -44.5 kJ/mol and the enthalpy of solution of hydrochloric acid (HCl) is -74.8 kJ/mol, calculate the enthalpy change for the precipitation reaction between NaOH and HCl, assuming all solutions are at a concentration of 1 M.

asked Feb 4 in ThermoChemistry by KatherinKely (1.8k points)

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Given the electrochemical reaction Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s), calculate the standard cell potential at 25°C if the standard reduction potentials are E°(Cu2+/Cu) = 0.34 V and E°(Zn2+/Zn) = -0.76 V.

asked Feb 4 in ElectroChemistry by HIELucille73 (2.1k points)

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1 answer 92 views

Given the chemical equation: N2 + 3H2 <-> 2NH3 and an initial concentration of N2 as 0.1M, H2 as 0.2M, and NH3 as 0. Calculate the equilibrium concentrations of each component at 298K if the reaction is exothermic and the pressure is increased. (Hint: Use Le Chatelier's principle to determine the direction of the shift and then use an ICE table to calculate the concentrations at equilibrium)

asked Feb 4 in Chemical reactions by ClaraCraddoc (1.6k points)

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Given the chemical equation for the oxidation of iron (Fe) to form iron(III) oxide (Fe2O3), determine the oxidation state of iron in both the reactant and product.

asked Feb 4 in Chemical reactions by JaredOliva6 (2.2k points)

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Given the balanced equation for the electrochemical reaction: Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s)Calculate the number of electrons transferred per copper atom during this reaction when a current of 5.00 A is passed for 6.00 minutes through a cell containing a copper electrode and a silver electrode with a silver ion concentration of 0.100 M.

asked Feb 4 in ElectroChemistry by HarleyOreill (1.9k points)

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1 answer 75 views

Given the balanced chemical equation: C6H12O6 + 6O2 -> 6CO2 + 6H2O The enthalpy of formation of glucose is -1273 kJ/mol and the enthalpy of formation of water is -286 kJ/mol. Calculate the enthalpy change of the oxidation of glucose in kJ/mol.

asked Feb 4 in ThermoChemistry by LidiaBautist (1.4k points)

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1 answer 44 views

Given the balanced chemical equation: 2NO(g) + O2(g) ⇌ 2NO2(g)At a certain temperature, the concentrations of NO, O2, and NO2 are 0.4 M, 0.1 M, and 0.3 M respectively. What is the reaction quotient (Qc) for this chemical reaction? Is the reaction at equilibrium or not? If not at equilibrium, which direction will it shift to reach equilibrium?

asked Feb 4 in Chemical thermodynamics by Roseanna7424 (1.6k points)

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1 answer 72 views

Given that the enthalpy of vaporization of water is 40.7 kJ/mol at its boiling point of 100°C, calculate the amount of energy required to boil 500g of water starting from 25°C.

asked Feb 4 in ThermoChemistry by AshleighFleg (2.1k points)

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Given a transition metal complex composed of a central metal ion and a set of ligands, use ab initio calculations to determine the bond lengths, bond angles, and oxidation state of the metal ion. Additionally, calculate the electronic structure of the complex and predict its reactivity towards other molecules.

asked Feb 4 in Computational Chemistry by AlphonsoKirk (2.1k points)

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Given a sample of mesoporous silica with a surface area of 500 m²/g, an amount of physisorbed nitrogen of 4.2 µmol/g, and assuming a monolayer coverage of 16.2 µmol/m², calculate the BET surface area of the silica.

asked Feb 4 in Surface Chemistry by RichelleVerr (2.1k points)

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1 answer 91 views

Given a sample of dry ice (solid CO2) with a mass of 50 grams, calculate the amount of heat energy that needs to be added to sublimate it completely into gaseous CO2 at a temperature of -78.5°C. The heat of sublimation of CO2 is 25.2 kJ/mol. (Assume that CO2 is an ideal gas under these conditions.)

asked Feb 4 in ThermoChemistry by AbbeyBisson8 (1.9k points)

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Given a reaction with the following data, calculate the rate constant (k) of the reaction:2 A + 3 B → CAt a particular temperature, the initial concentration of A was 0.2 M and the initial concentration of B was 0.5 M. After 30 minutes, the concentration of A decreased to 0.1 M while the concentration of B decreased to 0.3 M. The reaction is second order with respect to A and first order with respect to B.

asked Feb 4 in Chemical kinetics by NicholeBlade (2.1k points)

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Given a mixture of benzene and toluene, with a mole fraction of 0.6 and 0.4 respectively, design a distillation column with a reflux ratio of 2.5 to achieve a product purity of at least 99% for both components.

asked Feb 4 in Chemical engineering by JackH2065356 (1.1k points)

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1 answer 60 views

Given a half-reaction Cu2+(aq) + 2e- --> Cu(s) with an electrode potential of +0.34V and a half-reaction Fe3+(aq) + e- --> Fe2+(aq) with an electrode potential of +0.77V, what is the cell potential for the electrochemical reaction when Cu2+(aq) and Fe3+(aq) ions react to form Cu(s) and Fe2+(aq) ions?

asked Feb 4 in ElectroChemistry by EttaRide758 (1.3k points)

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Given a certain substance with a mass of 25 grams and an initial temperature of 25°C, if it absorbs 500 joules of heat energy, what is the final temperature of the substance? The heat capacity of the substance is 0.5 J/g·°C.

asked Feb 4 in Chemical thermodynamics by KraigFeldman (2.2k points)

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