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Given the following information: A polymerization reaction has a heat of reaction of -150 kJ/mol and a Δn (change in moles of gas) of +2 moles gas/mol. If 5.0 g of the monomer is polymerized, what is the enthalpy change (in kJ) for the overall reaction?

asked 2 days ago in ThermoChemistry by LucileSams37 (390 points)

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Given the following half-reactions:Cu²⁺ (aq) + 2e⁻ → Cu (s) E° = +0.34 VAg⁺ (aq) + e⁻ → Ag (s) E° = +0.80 VWhat is the cell potential for the reaction when a copper electrode is paired with a silver electrode in a standard electrochemical cell?

asked 2 days ago in ElectroChemistry by VictorTuq802 (410 points)

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Given the following half-reactions:Cu2+ (aq) + 2 e- -> Cu (s) E° = +0.34 VZn2+ (aq) + 2 e- -> Zn (s) E° = -0.76 VCalculate the equilibrium constant (K) for the reaction: Cu2+ (aq) + Zn (s) -> Zn2+ (aq) + Cu (s)

asked 2 days ago in ElectroChemistry by JanetteBrewi (450 points)

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Given the following equilibrium reaction: Fe3+(aq) + 4CN-(aq) <--> Fe(CN)64-(aq)If the equilibrium constant, Kc, is equal to 1.2 x 10^10 at 25°C, what will be the value of Kc at 50°C? And how will the equilibrium position shift when the temperature is changed from 25°C to 50°C?

asked 2 days ago in Chemical equilibrium by JolieTristan (460 points)

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Given the following equations and their respective enthalpy changes:1) 2H2 (g) + O2 (g) → 2H2O (l) ΔH = -484 kJ/mol 2) C2H5OH (l) + 3O2 (g) → 2CO2 (g) + 3H2O (l) ΔH = -1,367 kJ/mol 3) C2H5OH (l) → C2H4 (g) + H2O (g) ΔH = +44 kJ/mol Using Hess’s Law, determine the ΔH for the following reaction: C2H5OH (l) → 2CO2 (g) + 3H2 (g)

asked 2 days ago in Chemical reactions by BonnieEdens (370 points)

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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 2 days ago in ElectroChemistry by ClaudiaGut87 (400 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 2 days ago in ElectroChemistry by ConcettaMira (500 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 2 days ago in ElectroChemistry by AbbeyJaspriz (510 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 2 days ago in Chemical equilibrium by GQABrian353 (650 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 2 days ago in Chemical equilibrium by JinaEhrlichm (410 points)

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1 answer 35 views

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 2 days ago in ThermoChemistry by MeghanIliffe (430 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 2 days ago in ElectroChemistry by TerrellBejah (250 points)

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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 2 days ago in Chemical reactions by YasminDuncan (290 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 2 days ago in Chemical reactions by ClariceOrozc (290 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 2 days ago in ElectroChemistry by DannySantora (590 points)

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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 2 days ago in ThermoChemistry by KianUlt79673 (330 points)

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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 2 days ago in Chemical thermodynamics by OMSIsidra587 (450 points)

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1 answer 47 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 2 days ago in ThermoChemistry by IslaWoodward (530 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 2 days ago in Computational Chemistry by JaniTinker23 (570 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 2 days ago in Surface Chemistry by TrishaStanto (670 points)

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