Calculate the standard molar entropy of vaporization of water at 32.0 °C32.0 °C , given that its standard molar entropy of vaporization at 100.0 °C100.0 °C is 109.0 J⋅K−1⋅mol−1109.0 J⋅K−1⋅mol−1 and the molar heat capacities at constant pressure for liquid water and water vapor are 75.3 J⋅K−1⋅mol−175.3 J⋅K−1⋅mol−1 and 33.6 J⋅K−1⋅mol−133.6 J⋅K−1⋅mol−1 , respectively,

Q: Determine the entropy of * H₂(g) + Br2(g) → 2HBr (g)

A: Entropy measures the extent of the randomness of a system. It is represented by S. It increases with…

Q: A reaction has ΔH∘rxn= -134 kJ and ΔS∘rxn= 320 J/K.  At what temperature is the change in entropy…

A: Given: -ΔH°rxn = -134 KJΔS°rxn = 320 J/KIf everything is carried out at a constant temperature and…

Q: Determine the entropy change for the combustion of liquid ethanol, C2H5OH, under standard state…

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Q: For each pair of substances choose the one with the higher standard molar entropy and explain your…

A: a) NaNO3(s); NaNO3(l) NaNO3(l) will have higher standard molar entropy than NaNO3(s) Because in…

Q: At temperature T0, substance X in its A form (A can be liquid, solid or vapor) has same chemical…

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Q: How does temperature effect spontaneity? Under what conditions is enthalpy the dominant…

A: We know that, ΔG = ΔH - TΔS For a reaction to be spontaneous ΔG must be negative in sign ΔG < 0 ,…

Q: For each pair of substances choose the one with the higher standard molar entropy and explain your…

A: The measurement of disorderness is especially done by entropy. Higher the disorderness (randomness),…

Q: Explain how the entropy of a system is related to the number ofpossible microstates?

A: To find: The relation between the entropy and number of possible microstates

Q: Which of the following has the largest standard molar entropy, S° (298.15 K)? О а. Н2 (g) O b. NaCI…

A: Answer  The substance in gases state has higher entropy compared to…

Q: The enthalpy change when liquid methanol, CH3OH, vaporizes at 25°C is 38.0 kJ/mol. What is the…

A: Since the condensation process is happening at constant temperature Hence the entropy change can be…

Q: starting from the definition of Gibbs Free Energy, the 1st law of thermodynamics, the 2nd law of…

A: To derive the criteria for spontaneity for Gibbs free energy.

Q: Which one of the following is not equal to zero?   A.  Standard molar entropy of a perfect crystal…

A: Standard enthalpy of formation of elements and the compounds in their standard state is zero.

Q: Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure…

A: Enthalpy of fusion for 1 mole of Al is 10699.45 J/molInitial temperature = 25 degC = 298.15K KFinal…

Q: What is the entropy when a system goes from 4 microstates to 5 microstates?

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Q: How can you calculate the standard entropy change for a reaction from tables of standard entropies?

A: The standard entropy change for a reaction from tables of standard entropies can be calculated by…

Q: For which of the following reactions will the entropy of the system decrease? CaCO3(s) → CaO(s) +…

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Q: Consider the general reaction at 29 degrees C: 2 A + 1 B → 3 C + 3 D ΔH reaction = -2,079 kJ…

A: The change in entropy of a system at a constant temperature and constant pressure is given as:…

Q: Which of the following factors can result in an increase in the entropy of a system? 1. an increase…

A: The entropy is the degree of randomness . More is the randomness , more is the entropy . Temperature…

Q: What is the significance of the change in Gibbs free energy (ΔG) for a reaction?

A: In thermodynamics free energy or Gibbs free energy is the energy that is used to express the total…

Q: Calculate the boiling point of carbon tetrachloride if the standard entropy and enthalpy of…

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Q: As a system goes from state A to state B, its entropy decreases. What can you say about the number…

A: Given: Here there is a decrease when the system goes from state A to state B. The objective is to…

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

A: Solution In this question we use Third Law of Thermodynamics it tells us that as T → 0 K, S → 0.…

Q: 15.) Determine the change in entropy of the reaction: SO2 (g) + H2O2 (1) → H2SO4 (1). The standard…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: How does the molar entropy of a substance change with increasing temperature?

A: The randomness of the system is measured by the term, called entropy. The entropy of a system is an…

Q: Consider the general reaction at 26 degrees C: 2 A + 1 B → 3 C + 2 D ΔH reaction = -1,899 kJ…

A: Entropy is the measure of disorder or randomness of a system. The free energy change is given by,…

Q: In the frog muscle rectus abdominis, the concentrations of ATP, ADP and phosphate are 1.25×10-3 M,…

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Q: Calculate the change in entropy for 17 moles of gold if the temperature changes reversibly from…

A: Entropy of a system can be defined as the degree of randomness in that system. Joule per Kelvin is…

Q: When 10 J of energy is transferred reversibly and isothermally. Calculate the change in entropy at…

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Q: What is the entropy (S) of a system with 6.4 x 1020 microstates?

A: The relation between entropy and number of microstates is given by Boltzmann's equation - S = KB ln…

Q: What is the entropy when a system goes from 4 microstates to 5 microstates? 3.08 x 10-24 O -3.08 x…

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Q: How do you predict the entropy of a gas will change if a 2.0 L sample of that gas is compressed to a…

A: The entropy of a system is defined as the measure of randomness between the particles present in a…

Q: Calculate the molar heat capacity (Cpm ) of Magnesium chloride if the change in entropy is 0.264 J/K…

A: Assuming that the molar heat capacity (Cpm ) of  Magnesium chloride is constant over temperature…

Q: During a hypothetical process, the entropy of a system increases by 105 J K-1 while the entropy of…

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Q: Calculate the standard entropy of formation of liquid ethanol at 25°C. [S°(Cgraphite) =…

A: If the standard entropies of formation of each substance are known, then the standard entropy change…

Q: What is the significance of the change in Gibbs free energy (∆G)for a reaction?

A: The significance of the change in Gibbs free energy (∆G)for a reaction: (i) If ∆G for a reaction…

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: Consider a process in which the entropy of a system increases by 125 J K−1 and the entropy of the…

A: Entropy change of the universe is the summation of entropy change of the system and entropy change…

Q: The enthalpy change (ΔHrxn) for a certain reaction is 700.0 kJ/mol.  The same reaction has an…

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Q: Place the following in order of  increasing molar entropy at 298 K.  CO  ,   C 5H 12 ,    H 2

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Q: Explain why changes in both enthalpy and entropy determine the spontaneity of a process.

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Q: What is the molar entropy of a pure crystal at 0 K? What is the significance of the answer to this…

A: The third law of thermodynamics states that entropy of a pure crystal at a temperature of zero…

Q: If the normal boiling point of a liquid is 67 °C, and the standard molar entropy change for the…

A: Standard molar enthalpy change can be expressed in terms of standard molar entropy change and…

Q: The chemical reaction that causes aluminum to corrode in air is given by 4Al+3O2→2Al2O3 in which…

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Q: Q.6 The standard enthalpy of combustion of solid urea (CO(NH2)2) is -632 kJ mol at 298 K and its…

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Q: Estimate the change in the entropy of the universe due to heat escaping from your home on a cold…

A: Entropy is a measure of randomness. The change in entropy of the universe will be given by adding…

Q: Calculate the change in Gibbs free energy for each of the following sets of ΔH∘rxn , ΔS∘rxn , and T.…

A: ΔG∘ = ΔH∘ - TΔS∘

Q: Considering perfect gases, which state function is zero when two substances are mixed?…

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