A sample consisting 3.0 moles of a perfect gas molecules initially at thermal equilibrium with the surroundings 273 K undergoes an irreversible isochoric change to a final temperture of 207 K. Calculate ∆Ssys, ∆Ssurr, and ∆Stotal for the process. Assume Cp,m is 7/2 R throughout the entire temperature range.

Q: What are ΔS, ΔSsurroundings and Stot for a mole of perfect gas that halves its volume isothermally…

A: ∆Ssystem = -∆Ssurrounding ∆Stotal = 0 (for reversible)

Q: Given the AH values of the two allotropes, 12 (s) and I (g), determine which is more stable at this…

A: Given two allotropes as I2 (s) and I(g)The enthalpy of formation of both of them is 0 kJ/mol and 107…

Q: Quantities for Selected Substances at 298.15 K (25⁰C) Substance ∆H⁰f (kJ/mol) ∆G⁰f (kJ/mol) S…

A: In the given question we have to calculate the standard entropy ∆S° for catalytic hydrogenation of…

Q: A quantity of 0.5 mol of an ideal gas initially at 15.6◦C is expanded from 1.7 L to 7.9 L. Calculate…

A: To solve this problem, we can use the ideal gas law and thermodynamic equations. Let's calculate the…

Q: H

A:

Q: For the reaction A (g) → 2 B (g), K = 14.7 at 298 K. What is the value of Q for this reaction at 298…

A: The reaction given is,             A(g) → 2B(g) K = 14.7 at 298 K ∆G = -19.4 kJ/mol = -19.4  J/molWe…

Q: For the reaction A (g) → 2 B (g), K = 14.7 at 298 K. What is the value of Q for this reaction at 298…

A: Given data :  A(g) ==> 2B (g) , K = 14.7  ∆G = -1.5 KJ/mol

Q: uppose a compound could point in any of three directions in the solid and still have the same…

A: No of direction in solid a molecule can orient = M = 3No of molecules =N = 1.2703 * 1014Total…

Q: What is the ∆S⁰ in the combustion of ethane in the presence of excess oxygen yields carbon dioxide…

A: When a substance is burnt in the presence of oxygen, it leads to the formation of carbon dioxide and…

Q: Given the AH values of the two allotropes, 12 (s) and I (g), determine which is more stable at this…

A: Two allotropes are given I2(s) and I(g)Allotropes are different forms of the same element, where the…

Q: What are ∆S, ∆Sext, ∆Stot for a mole of perfect gas that simultaneously doubles in volume while…

A: Given Data:Moles of gas = 1 molGas doubles in volume while being compressed.Temperature = 1000°CTo…

Q: A system undergoes a transformation for which ASsys 0. The transformation will definitely be…

A: Gibbs free energy : ΔG = ΔH - ΔS For a process to be spontaneous, ΔG < 0 ΔGsys < 0 ΔH -TΔSsys…

Q: Under anaerobic conditions, glucose is broken down in muscle tissue to form lactic acid according to…

A:

Q: Given

A: We know that, 1J = 10^-3 kJ  ∆S° = -146.5 Jmol-1K-1  ∆S° = -146.5 • 10^-3 kJmol-1K-1  ∆S° = -0.1465…

Q: NH3 ⇋ N2 + 3 H2 When 1.29 M NH3 wis allowed to decompose until equilibrium has been achieved, 0.77…

A:

Q: Estimate the change in the molar entropy of O₂(g) when the temperature is changed from 25 °C to 0…

A: Given, Cp​=29.355 J/K-mol, T1​=25°C=298K, and T2​= 0°C= 273K,The change in entropy of the system (S)…

Q: For the reaction A (g) → 2 B (g), K = 14.7 at 298 K. What is the value of Q for this reaction at 298…

A:

Q: sider the reaction C₂H5Cl(9) -> C₂H4(9) + HCl(g). Use the Table of Bond Energies to estimate the…

A: Enthalpy change of a reaction (∆H0) in terms of bond enthalpies is given by    ............(1)…

Q: Consider the reaction N₂(g) + O₂(g)—2NO(g) Using standard thermodynamic data at 298K, calculate the…

A:

Q: At what tempature will a given process become spontaneous if  ΔH= -126 kj/mol and ∆S = 84 J/molK?

A: Given that:  dH = -126KJ/mol  dS = 84J/molK = (84J×1KJ/1000J)/molK = 0.084KJ/molK

Q: 3 mol of an ideal gas expand isothermically at 27 ºC, from 20 to 80 L, against a constant pressure…

A: Given- moles = 3 moles of ideal gas Temperature = 27 oC Initial volume = 20 L final volume = 80 L…

Q: For the reaction A (g) → 2 B (g), K = 14.7 at 298 K. What is the value of Q for this reaction at 298…

A: Given: K = 14.7 T=298 K. ∆G = -2.5 kJ/mol

Q: Thermodynamics Quantities for Selected Substances at 298.15 K (25⁰C) Substance ∆H⁰f (kJ/mol) ∆G⁰f…

A: The entropy of a reaction is the randomness or the disorderliness of a reaction. For example, a gas…

Q: For a certain chemical reaction, ∆H° = -35.4 kJ and ∆S° = -85.5 J>K. Does the reaction lead to an…

A: Entropy of system is the measure of randomness of particles and the change in entropy of a…

Q: 1. The value of the standard molar entropy of N₂(g) at 298K is 191.6 J/Kmole (Table 2C.7) a. If we…

A:

Q: f 2 mol of neon (assumed ideal) is heated from 0 °C to 250 °C at a constant pressure of 1 bar,…

A:

Q: Why decomposition reactions are called the opposite of combination reactions?Write equations for…

A: A chemical reaction is symbolic representation of the conversion of substances to new substances.…

Q: 2.1.1 Calculate ∆rGo , using only Gibbs energy values. 2.1.2 Calculate the equilibrium constant, K,…

A: Given that -  1/4 S8 (s) + 3O2(g) → 2SO3 (g)    (2.1.1) -    Then, Gibbs free energy is -  ∆G°rxn =…

Q: A reaction has ΔrH∘=ΔrH∘= -136 kJmol−1kJmol−1 and ΔrS∘=ΔrS∘= 305 JK−1mol−1JK−1mol−1 .   At what…

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Q: Four moles of an ideal gas are allowed to expand reversibly and isothermally at 25 °C from 6…

A: The ideal gas law is the equation of the state of a hypothetical ideal gas.  It can be written as,…

Q: The standard entropy for the formation of SF6(g) from the elements, S(s) + 3 F2(g) → SF6(g) is…

A: As we know, The standard entropy for a reaction can be calculated  S(s) + 3 F2(g) → SF6(g)

Q: According to the  Gibbs free energy change equation ΔG= ΔH -TΔS Where ΔS is

A: Given:

Q: The combustion of acetylene is used in welder's torches because it produces a very hot flame: C 2 H…

A: Standard molar enthalpy of carbon dioxide = -393.5 KJ/mol Standard molar enthalpy of water vapor =…

Q: For the reaction A (g) → 2 B (g), K = 14.7 at 298 K. What is the value of Q for this reaction at 298…

A: ∆G and Q are related as :  ∆G = ∆G° + RTlnQ  where , ∆G° is standard Gibbs free energy change . It…

Q: For the isothermal expansion of a gas into a vacuum, ∆E = 0, q = 0, and w = 0. (a) Is this a…

A: For the given system, the change in entropy of the system is positive because the measure of the…

Q: What is the value of ∆S⁰

A: ∆S⁰=Sproduct-Sreactant where, ∆S⁰=standared entropy  Sproduct=entropy of product Sreactant = entropy…

Q: Consider the reaction: 2 KClO3 (s) = 2 KCl (s) + 3 O2 (g). Based on the following data of standard…

A:

Q: For the isothermal expansion of a gas into a vacuum, ∆E = 0, q = 0, and w = 0. Explain why no work…

A: For isothermal expansion, we need to provide heat to the system. Hence heat and work done  have…

Q: Calculate ΔS when 25.0 g ethanol at 50.0 °C is added to 75.0 g ethanol at 10.0 °C in an insulated…

A: Entropy change= m×Cp ln T2/T1 25g ethanol has higher temperature 50°C than 75 g ethanol with 10°C.

Q: . A sample consisting of 150 g of CO molecules at 300 K is expanded isothermally from an initial…

A: