4.00 L of ar and 2.50 L of he, each at 298 K and 1.50 atm, were mixed isothermally and isobarically. The mixture was then expanded to a final volume of 20.0 L at 298 K. Write chemical processes for each step, and determine the change in entropy for the complete process.

Q: The molar entropy of argon (Ar) is given by Sm= 36.4 + 20.8 In T (in SI units). Calculate the change…

A:

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A: ∆G=-RTlnKGiven,∆G=75.40 kJ/mol=75400 J/molT=25 °C=298 KR=8.314 J mol-1 K-1

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Q: 2. A mixture consists of nitrogen (28 g/mol) and oxygen (32 g/mol). Decreasing the Gibbs free energy…

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Q: A chemical engineer is studying the two reactions shown in the table below. In each case, he fills…

A: Answer 1: The value of G is -24.7 kJ which is negative, therefore this reaction is spontaneous.…

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A: Given: Temperature(T)= 298 K When 1 mol of NH3 is formed from its elements in their reference…

Q: Assuming that neither standard enthalpy changes of formations (∆Hof)  nor standard molar entropies…

A: First, we shall estimate the enthalpy change of the reaction:…

Q: Calculate the Gibbs free energy change at 298 K for a mixture containing 1.5 atm H,º (g), 2(g), 2. 0…

A: We would use thermodynamics relation to calculate the value of change in Gibbs free energy ( ∆G ) .

Q: Describe how entropy and enthalpy combine for the overall determination of spontaneity. What values…

A: The Gibbs equation, shown in equation (1) where ΔH is the enthalpy change, ΔS is the entropy change,…

Q: Use the following tabulated thermodynamic data to calculate the entropy change (in J/K) of each of…

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Q: Calculate the change in entropy of a system when 2 mol water vapour at 150 ⁰C is cooled down to -10…

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Q: Consider 2.00 mol of an ideal gas with a constant-volume molar specific heat of 28.5 J/(mol-K), an…

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Q: The standard molar entropy of liquid water at 273.15 K is 65 J K−1 mol−1, and that of ice at the…

A: Given information: Standard molar entropy of water = 65 J/K.mol Standard molar entropy of ice = 43…

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Q: Use standard molar entropies to calculate the entropy change (in J/K.mol) for the reaction…

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Q: Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy…

A: Calculate standard entropy change of the given reaction--

Q: Calculate the change in entropy when 15.9 grams of argon (Ar) undergo isothermal compression from…

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Q: The heat capacity, Cp, of liquid carbon disulfide is a relatively constant 78 J/(mol K). However,…

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Q: Solve the following and provide the complete solution: Three moles of N2(g), originally at 1 atm…

A: Given  No. Of moles of N2 (g) = 3 moles.  No. Of moles of H2 (g) = 5moles. Conditions - constant…

Q: A salt has the form M2X3 where M is a metal cation and X is a nonmetal anion. If ΔG∘rxnΔGrxn∘ is…

A:

Q: Recall that for a monoatomic ideal gas, CV = (3/2)R. If an equal number of moles of any three ideal…

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Q: The standard molar enthalpy of fusion for xenon is 2.30 kJ mol–1. Calculate the standard molar…

A: Given, molar enthalpy of fusion for xenon , = 2.30 kJmol Temperature =-112°C=(-112+273)K=161 K

Q: If an ideal gas at 1.75 atm and 25 degrees Celsius is isothermally compressed from 800 mL to 150 mL,…

A: Initial volume of the gas, V1 =800 mL Final volume, V2 = 150 mL Calculation of initial moles of the…

Q: How does the standard entropy of a substance depend on its molar mass? On its molecular complexity?

A: Entropy is a thermodynamic property, which is the measure of randomness of a system. Entropy of the…

Q: 1 mol of ammonia gas and 3 mol of methane are mixed in a 3 L container at 20oC. What is the entropy…

A: The randomness of of a system is known as entropy.

Q: Use the information give below to calculate the value of the standard molar entropy, So m of a solid…

A: This can be done using Hess's law of constant heat summation which also applies in case of entropy.

Q: For an ideal solution containing 500 g toluene (92.14 g/mol) and 300 g xylene (106.16 g/mol)…

A: No of moles of toluene and xylene are calculated as follows: ntoulene=500 g92.14 g/mol=5.4265…

Q: What is the chemical significance of a positive Gibbs free energy change and what is the chemical…

A: The amount of energy available for doing some useful work is termed as free energy or Gibbs free…

Q: Which is spontaneous?   this reaction

A: Given temperature =  144.0°C  Given two reaction  C3H8g + 5O2g ---> 3CO2g+ 4H2O ΔH= −2220.kJ ΔS =…

Q: What is the entropy change

A:

Q: Calculate the measurable change in entropy (for the system) when the state of 2.00 mol of diatomic…

A: Change in entropy of system : VfVi = Tf × PiTi × Pf = 408 × 1.50298 × 7.00 = 0.2934  Cv = Cp - R =…

Q: Recall that for a monoatornic ideal gas, CV = (3/2) *R . If an equal number of moles of any three…

A: For monoatomic ideal gas  CV = (3/2)R  Change in entropy is given as follows  ∆S = -R [n1lnx1 +…

Q: What is the change in Entropy of 1mole of He in the following process He (298 k,1 bar) He(100 k,10…

A: Entropy of the universe always remains constant. Entropy is a measure of randomness. The change in…

Q: A chemical engineer is studying the two reactions shown in the table below. In each case, she fills…

A: a) The first reaction is written as follows: P4 (g)+ 6Cl2 (g)---------> 4PCl3 (g) Gibbs free…

Q: Consider a process in which an ideal gas changes from state 1 to state 2 in such a way that its…

A: No, this is not an isothermal process. Temperature of initial state ( state 1 ) and final state (…

Q: Calculate the boiling point (in K) of C2H5Cl according to the standard enthalpy of formation and…

A: The boiling point of C2H5Cl is calculated by the formula, T=∆Hfl-∆HfgSfl-Sfg......(1) Where, ∆Hfl…

Q: A certain reaction has ∆H ° = +23.7 kJ and ∆S° = +52.4 J>K. Is the reaction spontaneous at 298 K…

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Q: Initially, 0.075 mol CH3OH gas and 0.025 mol NOCl gas were mixed at 25 degrees celsius. At…

A: First of all we have to calculate the equilibrium concentration of all reactant and product to…