Where possible, classify these systems as reactant-favored or product-favored at 298 K. If the direction cannot be determined from the information given, classify the reaction as "Insufficient information." Reactant-favored Product-favored Insufficient information 2 Ae) + 2 Bg) S C AH' - +313 kJ 2 A(g) + 2 B(e) = 3 C) 2 A(g)+B(s) 3 C(g) AH-193 kJ AH- +254 kJ Ag) + 2 B) 2C Al-89 kJ Answer Bank

Where possible, classify these systems as reactant-favored or product-favored at 298 K. If the direction cannot be determined from the information given, classify the reaction as "Insufficient information." Reactant-favored Product-favored Insufficient information 2 Ae) + 2 Bg) S C AH' - +313 kJ 2 A(g) + 2 B(e) = 3 C) 2 A(g)+B(s) 3 C(g) AH-193 kJ AH- +254 kJ Ag) + 2 B) 2C Al-89 kJ Answer Bank

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter16: Thermodynamics: Directionality Of Chemical Reactions

Section16.8: Gibbs Free Energy, Maximum Work, And Energy Resources

Problem 16.10PSP: Predict whether each reaction is reactant-favored or product-favored at 298 K and 1 bar, and...

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Predict whether each reaction is reactant-favored or product-favored at 298 K and 1 bar, and calculate the minimum work that would have to be done to force it to occur, or the maximum work that could be done by the reaction. (a) 2 CO2(g) 2 CO(g) + O2(g) (b) 4 Fe(s) + 3 O2(g) 2 Fe2O3(s)
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by the reaction: ATP(aq)+H2O(l)⟶ADP(aq)+HPO2-4(aq)for which Δ?∘rxn=−30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of Δ?rxn in a biological cell in which [ATP]=5.0 mM, [ADP]=0.50 mM, and [HPO2−4]=5.0 mM.
Titanium can be produced by electrolytic reduction from an anhydrous molten salt electrolyte that contains titanium(IV) chloride and a spectator salt that furnishes ions to make the electrolyte conduct electricity. The stan- dard enthalpy of formation of TiCl4(liquid) is -750 kJ mol^-1, and the standard entropies of TiCl4(liquid), Ti(s), and Cl2(g) are 253, 30, and 223 J K^-1 mol^-1, respectively. What minimum applied voltage will be necessary at 100°C?
For the reaction2C2H6(g) + 7O2(g)4CO2(g) + 6H2O(g)H° = -2.86×103 kJ and S° = 92.7 J/KAt standard conditions, this reaction would be product favored at relatively low temperatures. at all temperatures. at relatively high temperatures. at no temperature.
For the reaction2CO2(g)+ 5H2(g)C2H2(g) + 4H2O(g)H° = 5 kJ and S° = -125 J/KAt standard conditions, this reaction would be product favored at no temperature. at all temperatures. at relatively high temperatures. at relatively low temperatures.
Use the data given in the table to calculate the value of Δ?∘rxn at 25∘ C for the reaction described by the equation A+B↽−−⇀C Compound Δ?∘f (kJ/mol) A +387.7 B –660.6 C +402.0
To a test tube containing 10.0 ml of 0.50 M HCl solution in a calorimeter, 0.05482 g of solid MgO (MW = 40.30 g/mol) at the same temperature was added. A change in temperature of 6.2°C was recorded. In a separate experiment, the heat capacity of the calorimeter was determined to be 0.293 kJ/°C. 1. Calculate the experimental ΔHrxn (in kJ/mol) for the reaction between MgO andHCl.2. If the theoretical ΔHrxn of the reaction between MgO and HCl is -1349 kJ/mol, calculate the %error.
Propylene glycol (C3H8O2) is an important compound used to de-ice airplanes before take-off and as RV antifreeze due to it being relatively non-toxic. A plausible reaction for the production of ethylene glycol is: 2 CO (g) + 2 H2 (g) + CH4 (g) -> C3H8O2 (l) Using the thermodynamic properties from the following table, what is the value for ΔrS°, in units of J K-1‑mol-1 at 25 °C? Substance ΔfH° (kJ/mol) S° (J/Kmol) CO (g) -110.5 197.7 H2 (g) 0 130.7 CH4 (g) -74.6 186.3 C3H8O2 (l) -429.8 93.7
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by the reaction ATP(aq)+H2O(l)⟶ADP(aq)+HPO2−4(aq) for which Δ?∘rxn=−30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of Δ?rxn in a biological cell in which [ATP]=5.0 mM,, [ADP]=0.50 mM,, and [HPO2−4]=5.0 Δ?rxn= kJ/mol Is the hydrolysis of ATP spontaneous under these conditions? yes no
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by the reaction. ATP(aq)+H2O(l)⟶ADP(aq)+HPO2−4(aq) for which Δ?∘rxn=−30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of Δ?rxn in a biological cell in which [ATP]=5.0 mM, [ADP]=0.40 mM, and [HPO2−4]=5.0 mM. Δ?rxn= Is the hydrolysis of ATP spontaneous under these conditions?
Without doing any calculations, match the following thermodynamic properties with their appropriate numerical sign for the following endothermic reaction.2H2O(g) + 2Cl2(g)4HCl(g) + O2(g) Clear All Grxn Hrxn Srxn Suniverse > 0 < 0 = 0 > 0 low T, < 0 high T < 0 low T, > 0 high T --- Without doing any calculations, match the following thermodynamic properties with their appropriate numerical sign for the following endothermic reaction.2N2(g) + O2(g)2N2O(g) Clear All Hrxn Srxn Grxn Suniverse > 0 < 0 = 0 > 0 low T, < 0 high T < 0 low T, > 0 high T
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