3.14 The change in Gibbs energy that accompanies the com-bustion of C6H12O6(s) to carbon dioxide and water vapour at25 °C is -2828 kJ mol-1. The potential energy of an object ofmass mat a height h, relative to that at the Earth's surface isgiven by mgh, where g = 9.81 ms-2 is the acceleration of freefall. How much glucose does a person of mass 65 kg need toconsume to climb through 10 m?

Step 1:The question asks how much glucose a person of weight 65kg needs to consume to climb through…

Answered: 3.14 The change in Gibbs energy that…

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

Section: Chapter Questions

Problem 121QRT

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(c) For reaction 1 taking place at 120 °C: Hg0(s) + S02(g)= Hg(1) + SO3(g) Reaction 1 AreactG® = -13.6 kJ mol-1 %3D (i) Given the standard Gibbs free energy above for reaction 1, calculate AreactG when the partial pressures for S0, and SO2 are 1 bar and 0.004, respectively. (ii) Calculate the equilibrium constant for the reaction and hence state what will be the mole fraction of SO3 in the gas phase at equilibrium. Note: In calculation assume K=÷; where the term x is the mole fraction of SO3. 1-x
4. The reaction of metallic cobalt (Co) with oxygen can be described by Co(s) + O2 CoO(s) in which the label (s) indicates reactants and products in a solid form. The Gibbs energy change for this reaction at oxygen pressure po, = latm is given by the expression, kJ AG (T) = -500.8- kJ =)T molK mol + (0.164- in which T is the temperature in kelvin. This energy change is per mole of O2 consumed. You might refer to the Ellingham diagram discussed in class and included in the lecture slides to see if the numbers seem to match the plot for that particular reaction. a) Recall that AG = AH - TAS, and that AH and AS only display a weak temperature dependence. Compare to the above equation for AG, What does that tell you about the sign of AS for the reaction? Is it positive or negative? Explain why the sign makes sense for that particular reaction, and also note the slope of this reaction in the Ellingham diagram. Is it consistent? Note that the slopes in the Ellingham diagram relate to the…
(c) For reaction 1 taking place at 120 °C: Hg0(s) + S02(g) = Hg(l) + S03(g) Reaction 1 AreactG = -13.6 kJ mol-1 (i) Given the standard Gibbs free energy above for reaction 1, calculate AreactG when the partial pressures for S0, and SO2 are 1 bar and 0.004, respectively. (ii) Calculate the equilibrium constant for the reaction and hence state what will be the mole fraction of SO3 in the gas phase at equilibrium. Note: In calculation assume K=÷; where the term x is the mole fraction of SO3. 1-x
In a particular biokgikal reaction taking place in the body at 37 C, the change in enthalpy was -125 kJ mol' and the change in entropy was -126 JK' mol". (a) Cakulate the change in Gibbs energy. (b) Is the reaction spontaneous? (e) Cakulate the total change in entropy of the system and the surroundings.
The reduction of iron(III) oxide (Fe,0,) to pure iron during the first step of steelmaking, 2 Fe,0, (s) – - 4 Fe(s) + 30,() is driven by the high-temperature combustion of coke, a purified form of coal: 圖 C(s) + 0,(g) → Co, (g) dlo Suppose at the temperature of a blast furnace the Gibbs free energies of formation AG, of CO, and Fe, O, are -428. kJ/mol and -833. kJ/mol, respectively. Calculate the minimum mass of coke needed to produce 2000. kg of pure iron. Round your answer to 2 significant digits. Okg Explanation Check O 2021 McGraw-Hill Education. AlI Rights Reserved. Terms of Use| Privacy | Accessibility
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3.(10p) The molar volume of a certain solid is 142.0 cm3mol-1 at 1.00 atm and 427.15 K, its melting temperature. The molar volume of the liquid at this temperature and pressure is 152.6 cm3mol-1. At 1.2 MPa, the melting. temperature changes to 429.26K. Calculate the enthalpy and entropy of fusion of the solid using the Clapeyron equation.
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The reduction of iron(III) oxide (Fe₂O,) to pure iron during the first step of steelmaking, 4 - 4 Fe(s) + 30, (e) 4 2 Fe,0,(3) is driven by the high-temperature combustion of coke, a purified form of coal: C(s) + O₂(e) co₂(e) Suppose at the temperature of a blast furnace the Gibbs free energies of formation AG, of CO, and Fe₂O, are-413. kl/mol and -826. kJ/mel, respectively. Calculate the maximum mass of pure iron that can be produced by the combustion of 6200. kg of cake. Round your answer to 2 significant digits. A kg 0.P 00 1.60 9
The reduction of iron(III) oxide (Fe2O3) to pure iron during the first step of steelmaking, 2 Fe2O3(s) 4Fe(s) + 302 (g) is driven by the high-temperature combustion of coke, a purified form of coal: C(s) + O2(g) - - CO2(g) Suppose at the temperature of a blast furnace the Gibbs free energies of formation AG of CO2 and Fe2O3 are -428. kJ/mol and -821. kJ/mol, respectively. Calculate the minimum mass of coke needed to produce 680. t of pure iron. (One metric ton, symbol t, equals 1000 kg.) Round your answer to 2 significant digits.
The reduction of iron(III) oxide (Fe₂O,) to pure iron during the first step of steelmaking, 2 Fe₂O₂ (s) 4Fe(s) + 30₂ (g) 1 is driven by the high-temperature combustion of coke, a purified form of coal: C(s) + O₂(g) CO₂ (g) - Suppose at the temperature of a blast furnace the Gibbs free energies of formation AG, of CO₂ and Fe₂O, are-443. kl/mol and -801. kJ/mol, respectively. Calculate the maximum mass of pure iron that can be produced by the combustion of 8200. kg of coke. Round your answer to 2 significant digits. 0.8 X ?
The reduction of iron(III) oxide (Fe₂O,) to pure iron during the first step of steelmaking. 2 Fe,0, (s) 4 Fe(s) + 30₂ (g) is driven by the high-temperature combustion of coke, a purified form of coal C(s) + O₂(g) → CO₂(e) Suppose at the temperature of a blast furnace the Gibbs free energies of formation AG, of CO₂ and Fe₂O, are-418. k/mol and 825 kJ/mol, respectively. Calculate the maximum mass of pure iron that can be produced by the combustion of 3700 kg of coke. Round your answer to 2 significant digits kg X 8 CE

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