Which of the following statements is/are true regarding the Third Law of Thermodynamics?  I) So of crystalline solid MgCl2 at 298 K is greater than zero.  II) For any spontaneous process, the entropy of the universe increases. III) The total energy of the system and surroundings is constant.    A) I only B) both I and II C) None of the statement D) only II E) only III

Q: If a reaction has a ΔH of 188.0 kJ/mole and is spontaneous for all temperatures greater than  49.9…

A: For spontaneous reaction, the value of Gibbs free energy must be negative.

Q: The heat of melting of ice at 1 atmosphere pressure and 0°C is 1.4363 kcal/mol. The volume of ice is…

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Q: Which of the following combinations of entropy changes for a spontaneous process are mathematically…

A: A multiple choice question based on chemical thermodynamics, which is to be accomplished.

Q: Consider the reaction CO(g) + Cl2(g)COCl2(g) Using standard thermodynamic data at 298K, calculate…

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Q: Which statement is generally true about the standard molar entropy? It is greater for a a solid than…

A: Entropy, is the measure of randomness of molecules . Since , gas molecules are more random so they…

Q: A particular reaction is spontaneous at 450 K. The enthalpy change for the reaction is +34.5 kJ.…

A: Given : Enthalpy change of reaction, ΔH = +34.5 KJ = 34500 J…

Q: Discuss the Free Energy under Nonstandard Conditions?

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Q: Explain the single criterion for a physical process to be classified as spontaneous.

A: Spontaneous processes are the changes occur without work to be done on the system and it occurs…

Q: In the first stage of the industrial production of nitric acid, ammonia reacts at high temperature…

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Q: A system goes from state 1 to state 2 and back to state 1.(a) Is ΔE the same in magnitude for both…

A: Part A: The change in internal energy is a state function. The value of internal energy is dependent…

Q: Which of the following is TRUE for a spontaneous process? Ο ΔΗΤAS

A: In this question we have to tell the condition for the spontaneous process.

Q: Indicate whether each statement is true or false. (a) Theentropy of the universe increases for any…

A: (a) The spontaneous process is a process that starts on its own without any external effort.…

Q: Which of the following statements is/are true regarding the Third Law of Thermodynamics?  I) So of…

A: Third law of thermodynamics states that entropy of a perfect crystal is almost zero.

Q: Use the information provided in the table below to calculate the change in entropy of the universe…

A: To solve this problem  we have to first calculate  ∆Ssys and ∆Ssurr   As we know that  ∆Suniv  =…

Q: 9. Is the reaction Si(s) + 2 Cl2(g) → SICL, (g) spontaneous under standard conditions at 298 K?…

A: Given reaction is :  Si (s) + 2Cl2 (g) -------> SiCl4 (g)  a). Calculate change in entropy of the…

Q: (a) (i) What are the thermodynamic quantities of a system that affect the amount and sign of the…

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Q: Calculate the standard molar entropy change for the combustion of methane gas using S° values from…

A: The equation for combustion of methane gas is, The standard entropy value for oxygen O2 is…

Q: A process increases the entropy of the system by 493 J/mol K and absorbs 87 kJ/mol of heat from the…

A: Answer is given as follows

Q: The vaporization of a liquid at a certain temperature and pressure is spontaneous. For this process,…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…

Q: A substance has a molar specific heat, cV,m=4.00 J K-1mol-1and a molar mass, M=10.0 g/mol. A 100.0 g…

A: Given : mass of sample 1 and 2 and molar mass of sample and molar specific heat. To find: final…

Q: When is Gibbs free energy negative? If is it spontaneous or non-spotaneous?

A: Gibbs free energy change is a thermodynamic parameter, which is associated with the enthalpy and…

Q: Consider a 1.2 mol block of iron with a specific heat capacity of 0.44 J/g°C. The atomic mass of Fe…

A: The amount of heat required to raise the temperature of the sample is given by: q =m c∆Tq is the…

Q: Consider the reaction 2B1F3(g)- →Br2(g) + 3F2(g) The standard free energy change for this reaction…

A: We have to calculate Gibbs free energy .

Q: Cite at least 3 examples of spontaneous phenomena.

A: Example 1 : Common salt dissolves in water of its own. Reason : when we put some salt in a glass of…

Q: The entropy change for the process                                      H2 O(s) ⟶ H2 O(l)is 22.1 J/K…

A:

Q: is a spontaneous process necessarily exothermic? Give examples to support answer.

A: Spontaneous processes are those processes which take place on their own without providing any energy…

Q: A substance has a molar specific heat, cV,m=4.00 J K-1mol-1and a molar mass, M=10.0 g/mol. A 100.0 g…

A: Given : Intial temperature of sample 1= 250 K.                 Initial temperature of sample 2 = 400…

Q: s) False Entropy changes in the system are primarily determined by heat flow in and out of the…

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Q: Answer the following in not more than 3 sentences. Q. consider the vaporization of liquid at 1…

A: When any reaction favors products without any input, that reaction is known as Spontaneous Reaction.

Q: A heat engine operates between a high- temperature reservoir at 610 K and a low- temperature…

A: Entropy S can be calculated by the following formula. S=QTS=entropyQ=heat involvedT=temperature…

Q: Answer the following in not more than 3 sentences. Q. Consider the vaporization of liquid water at 1…

A: The conversion of liquid water to gaseous water is referred to as vaporization.

Q: Consider the process: CH,OH(1) → ÇCH,OH(g) Use the Table of Thermodynamic Properties to determine AS…

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Q: true? Select one: Exothermic processes decrease the entropy of the surroundings. The standard molar…

A: We will pick Correct statement

Q: the third law of thermodynamics .How is it interpreted in a microscopic thermodynamic sense?…

A: Thermodynamic is made of two words thermos means heat and dynamic means motion so can say that here…

Q: The third law of thermodynamics states that O AU = q + w energy is not created nor destroyed for any…

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Q: Calculate the entropy change for the following process. H2O (s, 100 g, -10°C, 1bar) →H2O (s, 100 g,…

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Q: Which of the following is false about the second law of thermodynamics? O It is not possible to…

A: The correct option is:

Q: Calculate the "Third Law" entropy of CCla gas at 200 °C from the following data for CCl4. o S9s(liq)…

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Q: For a certain process that occurs at constant T and P, the value of ∆G is positive. Is the process…

A: A spontaneous reaction is accompanied by decrease in enthalpy (negative ∆H) and increase in entropy…

Q: The second law of thermodynamics states that _____ A) no engine can be 100% efficient B)…

A: Given: To define the second law of thermodynamics.

Q: An object at 400 K absorbs 25.0 kJ of heat from the surroundings. What is the change in entropy ΔS…

A: The given data is as follows: The temperature of the object = 400 K The object absorbs heat ∆H= 25.0…

Q: Calculate the entropy change of 63.4 g of water that freezes into ice at 273.15 K. AHfug for water…

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Q: Considering entropy (S) as a thermodynamic parameter , the criterion for spontaneity of any process…

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Q: 10. Is the reaction Si(s) + 2 H,(g) → SiH,(g) spontaneous under standard conditions at 298 K? AnSwer…

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Q: Which of the following describes the second law of thermodynamics? deltaS(system) + deltaS…

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Q: Exothermic Changes: the system by the surroundings the surroundings. The heat the freedom of motion…

A: Exothermic changes The system looses heat to the surrounding.the heat gain by the surrounding…