Estimate molar entropy of kcl at 5K given that it's molar heat capacity at that temperature is 1.2mJ/mol K

Q: Choose the compound with the largest standard molar entropy, S° (298.15 K). A) H:O(I) B) H:O(g) C)…

A: Standard molar entropy: The standard molar entropy is defined as the entropy or degree of randomness…

Q: The entropy change ΔS for a phase transition equals ΔH/T, where ΔH is the enthalpy change. Why is it…

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Q: Consider a process in which 250 kJ of energy is transferred reversibly and isothermally as heat to a…

A: Entropy is the measure of degree of randomness. The change in entropy can be measured as follows:

Q: In freezing a mole of liquid water at the freezing point, the enthalpy of fusion is 6.01 KJ/mole.…

A: The given data is as follows: The enthalpy of fusion = 6.01 kJ/mol = 6.01×1000 J=6010 J The entropy…

Q: The enthalpy of vaporization of chloroform (CHCl3) is 29.4 kJ mol−1 at its normal boiling point of…

A: Given that, Enthalpy of vaporization of chloroform, ∆Hvap(CHCl3) chloroform= 29.4 kJ mol−1 =29400 J…

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: Given ΔHrxn∘= −135 kJ, ΔS∘rxn= −263 J/K, & T= 299 K, will the reaction be spontaneous?

A: Given: ΔHrxn∘= −135 kJ ΔS∘rxn= −263 J/K T= 299 K To find: Whether the reaction is spontaneous

Q: What is the absolute entropy of chlorine gas at 300 K using Cp = 0.48 J/ g.K?

A: Given that : We have to calculate the absolute entropy of chlorine gas at the given conditions :…

Q: Calculate the change in molar entropy when hydrogen gas is heated from 20°C to 30°C at constant…

A: Entropy change of the system is a state function. The change in entropy is the sum of the change in…

Q: Which of the following is expected to have the highest standard molar entropy at 298.15 K? O C3H8…

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Q: Indicate whether each statement is true or false. (a) The third law of thermodynamics says that the…

A: The entropy tells the randomness present in the system due to its disorderness created in the…

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

A: Given CO C5H12 H2 Arrange them in order of increasing molar entropy = To be determined

Q: Under standard conditions the absolute entropy of liquid water is (H2O(l)) = 69.91 J K-1 mol-1 .…

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Q: Calculate the standard state entropy of formation for H2O gas and of H2O liquid. Why is the entropy…

A: Solution: Standard entropy values at 25 deg. C for reference

Q: Using the Boltzmanns formula calculate the entropy of 1.13e12 molxeules if they are randomly…

A: Calculation of residual entropy :

Q: Calculate the standard molar entropy of vaporization of water at 32.0 °C32.0 °C , given that its…

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Q: Choose the compound with the smallest standard molar entropy, S° (298.15 K). A) H2O (l) B) H2O (g)…

A: Entropy is the measure of disorder of molecules in a system. More the randomness, more will be the…

Q: Consider the reaction: 2H₂O(1) 2H₂(g) + O₂(g) Using standard thermodynamic data at 298K, calculate…

A: Enthalpy change of reaction (∆H) is calculated from enthalpies of formations of Products and…

Q: The heat capacity at 1 atm. pressure of solid magnesium in the temperature range from 0°C to 560 °C,…

A: Since the units of T to be substituted in the Cp equation is not mentioned. Hence i'm assuming it to…

Q: What is the precise definition of entropy? What is the significance of entropy being a state…

A: Entropy is a thermodynamic state function that determines randomness in a system.  When we raise…

Q: Consider the reaction: NH4Cl(aq)NH3(g) + HCl(aq) Using standard thermodynamic data at 298K,…

A: Interpretation -  To determine the  entropy change for the surroundings when 1.76 moles of NH4Cl(aq)…

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

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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: What is the change in entropy in a large mass of water at 50 °C when it receives 155 kJ of energy in…

A: Answer is explained below. Given that, the change is reversible and the mass of water is large…

Q: The standard molar entropy of silver chloride (AgCl) is 96.2 J/(mol*K). What is the entropy of 1.78…

A: We have to calculate the entropy of given mass of Silver chloride.

Q: Determine the entropy change for the combustion of gaseous propane, C3Hg, under the standard…

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Q: Calculate the change in entropy of 1 mol of nitrogen if it is heated from 300 K to 1000 K at a…

A: Moles of nitrogen = 1 mole T1 = 300 K T2 = 1000 K P = 1 atm

Q: Determine the change in entropy for 1.0 mole of an ideal gas originally confined to one- half of a…

A: At constant temperature, change in entropy is calculated using formula :

Q: Which law states that the entropy of a perfect crystalline substance is zero at the absolute zero of…

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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: 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: Use a Table of Thermodynamic Data to calculate the standard molar entropy change for a) the…

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Q: At 25 ̊C, the rhombic form of sulfur is the most stable form, which undergoes a transition at 95 ̊C…

A: Temperature = 25oC = 298.15 K = T ΔH = 0.402 kJ mol-1 = 402 J mol-1 Use this relationship to find ΔS…

Q: Calculate the change in molar entropy when a sample of nitrogen gas expands isothermally from 1.0…

A: Initial volume, V1 = 1.0 dm3 Final volume, V2 = 5.5 dm3 At isothermal conditions, change in…

Q: 1. The heat capacity at 1 atm. pressure of solid magnesium in the temperature range from 0 °C to 560…

A: The unit of temperature is not mentioned therefore i am using kelvin. Data given: T2 =800K, T1…

Q: The enthalpy of the graphite → diamond phase transition, which under 100 kbar occurs at 2000 K, is+…

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Q: If one mole of an ideal gas (Cp,m = 5R/2) is expanded isothermally at 300 K until it's volume…

A: We have to calculate the change in entropy of the gas .

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

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Q: At 25˚C, the rhombic form of sulfur is the most stable form, which undergoes a transition at 95˚C to…

A: Temperature = 25oC = 298.15 K = TΔH = 0.402 kJ mol-1 = 402 J mol-1Use this relationship to find…

Q: What are the criteria for spontaneity(a) in terms of entropy and(b) in terms of free energy?

A: The Gibbs free energy is an important parameter to predict the feasibility of a process. The entropy…

Q: 1. The heat capacity at 1 atm. pressure of solid magnesium in the temperature range from 0 °C to 560…

A: Since in the question its not mentioned that in what unit the T is being substituted in Cp equation.…

Q: Whenever a gas expands isothermally, such as when you exhale or when a flask is opened, the gas…

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Q: For each of the following pairs of substances, determine which has the larger molar entropy at 298…

A: The first given pair is Br2(l) and Cl2(g). More is the irregularity in the compound; more will be…

Q: In each of the following pairs, which compound wouldyou expect to have the higher standard molar…

A: Entropy: It is the measure of disorder or randomness that is occurring in the system. Standard molar…

Q: Thermodynamic state functions include enthalpy, entropy, and _____________.

A: Thermodynamic state function having four states, but here only two is given remaining has to be…

Q: the molar entropy of ammonia, NH_3 (g) at 25deg cel is 192.5 J/mol*k. Estimate the number of micro…

A: The standard molar entropy of ammonia gas is 192.5 J/mol.K. One mol of ammonia gas contains 6.022 x…