30. The molar heat of vaporization of phosphine is 14.6 kJ/mol and phosphine’s boiling point is –87.7oC. Calculate the entropy change for vaporization.

Q: The equilibrium freezing point of water is 0°C at lam pressure. At that temperature and pressure the…

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Q: Ethanethiol (C2H; SH; also called ethyl mercaptan) is commonly added to natural gas to provide the…

A: The relationship between the entropy of vaporisation and heat of vaporisation is given by  ΔS = ΔH /…

Q: What is the main reason why ΔG or change in free energy is important for determining the spontaneity…

A: ∆G° is the Gibbs free energy which tells about the spontaneity of the reaction.  If ∆G° = +ve…

Q: The change in enthalpy and entropy of the reaction below are -166 KJ and -284.8 J/K respectively. If…

A: Gibbs free energy of a reaction can be used to determine the spontaneity of a reaction. Write the…

Q: Which of the following gases has the highest entropy?

A: Entropy depends on the molar mass of the substance. Greater is the molar mass of the gas, the more…

Q: When does a spontaneous process occur?

A: To explain when does a spontaneous process occurs.

Q: he boiling point of a certain pure liquid is 71.5°C and the enthalpy of vaporization is 26.5 kJ/mol…

A: According to Gibbs formula     ∆G = ∆H - T∆S  at equilibrium i.e Vaporization liquid ⇔ Vapour ∆G…

Q: Which of the following is true? a. The greater the number of molecules in a system, the higher its…

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Q: The boiling point of Compound X is 12°C and its enthalpy of vaporization is 24.6 KJ/mole. What is…

A: The detail solution is given below, Boiling point of compound X = 12 degree C TBP=(12+273)=285K…

Q: Explain the various phenomenon in a crystal that contribute to increase in entropy.

A: Entropy is defined as the measure of disorder in crystal or unavailability of energy to do work.…

Q: For bismuth, Bi, the heat of fusion at its normal melting point of 271 °C is 11.0 kJ/mol. The…

A: Given- ∆Hfusion = 11.0 kJ/mol Melting point = 271 °C Moles of Bi = 2.42 Pressure = 1 atm   To find-…

Q: er antimony, Sb, the heat of fusion at its normal melting point of 631 °C is 19.6 kJ/mol. ne entropy…

A: Question is based on the concept of chemical thermodynamics. enthalpy of fusion is defined as the…

Q: Suppose some ice at 0ºC is placed into 50.00g of water at 25.5ºC. When the system reaches…

A: Here we are required to find the heat of fusion of ice Hf

Q: Consider the reaction CO(g) + Cl2(g)COCl2(g) Use the standard thermodynamic data in the tables…

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Q: 21. Gold nanoparticles exhibit a variety of color characteristics at which relative scale? A. 10 -10…

A: We'll answer the first question, since the exact one wasn't specified. Please submit the question…

Q: calculate Gibbs free energy change in KJmol^-1 . The temperature for the reaction is 425k.

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Q: explain the laws of thermodynamics, including the first, the second, and the third law of…

A: Thermodynamics is the branch of science that deals with the heat and other forms of energy like…

Q: emf of a reaction and its Gibbs free energy change. The Gibbs free energy change and emf values of…

A: We will check the correct statement from the the following.

Q: All things trend toward disorder. When cups of hot milk are left on the table for a long period of…

A: The second law of thermodynamics : The second law of thermodynamics helps us to determine the…

Q: 2. The molar heats of fusion and vaporization of benzene are 10.9 kJ/mol and 31.0 kJ/mol,…

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: Use data from Appendix C to estimate the normal boiling point of CCl4.

A: Since the Appendix C has not been provided, the question will be solved, considering the standard…

Q: A block of metal is warmed irreversibly at constant pressure from 267 K to 315 K. The heat capacity…

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Q: For magnesium, Mg., the heat of fusion at its normal melting point of 649 °C is 9.0 kJ/mol. The…

A: When a solid melts to the liquid state its entropy increases. The entropy of fusion of the solid is…

Q: State the first and second laws of thermodynamics. Living systems may appear to violate the second…

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Q: Which statement concerning entropy is true? (A) The more microstates a system has, the higher the…

A: Entropy of a system can also be defined as the measure of disorder of system.

Q: Calculate the entropy change of the surroundings when 15.2 g of solid iodine sublimes at 25.0 °C.…

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Q: Consider the reaction CO(g) + Cl2(g)COCl2(g) Use the standard thermodynamic data in the tables…

A: Gibbs free energy change for the reaction

Q: Under what conditions is N0glg)7 NOG)+NO,g spontaneous?

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Q: Consider the reaction N2(g) + O2(g)2NO(g) Use the standard thermodynamic data in the tables linked…

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Q: which has more entropy per mole at a given temprature 2 mol O (g) or 1 mol O2(g)

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Q: What is the vapor pressure, in mmHg, of ethanol at 52.1 °C? What is the entropy of vaporization at…

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Q: Question 25 of 35 Sub The second law of thermodynamics states that A) no engine can be 100%…

A: Answer

Q: in what kind of compound entropy effect is small. give examples

A: Entropy is defined as the degree of randomness odd disorder in a system. There are many factors…

Q: A 870-g quantity of a substance is at its melting point of -117.9°C in the liquid state. The heat of…

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Q: Which of the following describes an endergonic reaction?       is nonspontaneous       is…

A: The endergonic reaction means that ∆G > 0

Q: TRUE OR FASLE Entropy increases from solid to liquid to gas

A: Entropy represents degree of disorder or randomness.

Q: Determine if the following reaction is spontaneous at 298K Enthalpy = -269.3kJ/Mol Entropy =…

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Q: The CO2 sublimation heat is 16.2 kJ/mol and the entropy value of sublimation is 88.5 joules/mol. k…

A: Sublimation is the process in which solid subtance directly converted into gaseous form.  Chemical…

Q: When a liquid freezes, its entropy increases: true or false?

A: Entropy is the measure of randomness or disorder among particles of a given system. A liquid freezes…

Q: If a cube of ice at 0°C is placed outside on a warm summer day, the ice will melt spontaneously.…

A: Spontaneous reaction is the one which undergoes by itself without the aid of external help. For a…

Q: Consider the reaction Cl2(g) + Br2(g) → 2 BRCI(g) at 25 °C. The entropy change for the reaction is…

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Q: The entropy and enthalpy of a reaction are both negative. Is the reaction spontaneous? Explain

A: The entropy and enthalpy of a reaction are both negative. Is the reaction spontaneous has to be…

Q: Benzene standard evaporation entropy is 96.4 J / K.mol and standard evaporation enthalpy is 33.9 kJ…

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Q: What statement is true?     A perfect crystalline substance has zero entropy at 0°C.     Entropy…

A: INTRODUCTION: Entropy is defined as the measure of randomness of a system.Entropy of a physical…

Q: how to rank the entropy of solids

A: Entropy is used in thermodynamics and is an extensive property. Entropy having the relation to…

Q: Chemical Thermodynamics Calculate the ASfor the vaporization of water at 100°C. 40.7 kJ mol 1

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Q: When a liquid is converted to a solid, entropy increases. True O False

A: Entropy: Entropy is defined as the thermal energy of the system that is unavailable for doing useful…

Q: Calculate the change in entropy when the pressure of a 55.0 g sample of oxygen gas is increased from…

A: Given- w= 55.0 g Molar mass of O2= 32g/mol P1 =625 mm Hg P2 = 1.24 atm Temperature = 250 C =…

Q: The vaporization of bromine requires 31.0 kJ/mol and has an increase in disorder (AS° = 93.0…

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