A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the final number of microstates is 0.674 times that of the initial number of microstates?

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: If the entropy of the system increases during a reversible process, the entropy change of the…

A: The entropy change of the system depends upon the randomness. As the randomness of the system…

Q: >What is a perpetual motion machine? Can such a machine exist given the laws of thermodynamics?

A: Perpetual motion machine:It is an idealistic concept which moves indefinitely without any energy…

Q: he sum of the entropy changes of the system and the surroundings (∆SSYS + ∆SSURR) are:

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Q: A box contains a helium gas with 15 helium atoms. Initially, 12 helium atoms are in the right…

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Q: Three moles of an ideal gas at 500 K expand quasi-statically and isothermally from an initial volume…

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Q: AS ΔΗ- ΔΗ: ↑

A: Entropy is the term defined as irregularities of the atoms if the irregularities increase then the…

Q: Define importance of second law of thermodynamics and knowing entropy

A: There are four laws of thermodynamics such as zeroth law of thermodynamics, 1st law of…

Q: A system is at an initial entropy of 375 J/K and undergoes a system change that results in a final…

A: Given that, Initial entropy = 375 J/K Final entropy = 840 J/K

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: If the difference between the enthalpy of the products and that of the reactants is positive and the…

A: A spontaneous reaction is a reaction that favors the formation of products at the conditions under…

Q: Calculate the total change in entropy for a process in which 10.0 grams of liquid water at 10.0…

A: Water has three phase, solid ice, liquid water and vapor. For conversion of one phase to another…

Q: What is the change in entropy (positive, negative, or zero) for the system? H2O (l) --> H2O (s)

A: Entropy is the measure of randomness of the system.

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

A: Calculation of residual entropy :

Q: Suppose a compound could point in any of three directions in the solid and still have the same…

A: • This problem is based upon the third law of thermodynamics.  • This law can be given as, Total…

Q: Under what circumstances does entropy of a system decrease for a spontaneous process

A: For any  spontaneous process, the value of Gibbs free energy change i.e ΔG should be -ve And since…

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: Determine the entropy change for the combustion of gaseous propane, C3H8, under standard state…

A: Thermodynamics is the branch of chemistry which deals with the study of heat and other forms of…

Q: Why does the entropy of a gas increase when it expands into a vacuum?

A: Entropy of a system is the measure of the randomness or dis-ordered ness of the system. The entropy…

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

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Q: What is the third law of thermodynamics? How does the third law relate to the calorimetric entropy…

A: Thermodynamics relates to the heat, temperature, and energy of chemical reactions. It studies the…

Q: In a spontaneous process, the entropy of the system always increases. True or False

A: The overall spontaneity of the reaction is determined by the Gibbs free energy change, (∆G) If the…

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

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Q: How many microstates are present in a system with an entropy of zero?

A: The entropy (S) and microstates(W) are related by formula : S = kB ln(W)  Here , kB = Boltzmann…

Q: Consider a sample of perfect gas (0.10 mol) held inside a cylinder by a piston such that the volume…

A: Given : Moles of gas = 0.10 mol. Initial volume of gas = 1.25 dm3 = 1.25 L…

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: A heat source generates heat at a rate of 71.0 W (1 W = 1 J/s). How much entropy does this produce…

A: The heat generated by the heat source is = 71.0 W = 71.0 J/s The temperature of the surrounding is =…

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: One mol of an ideal gas at 300 K expands reversibly from 3 x 102 m³ to 5 x 102 m3, Calculate the…

A: Entropy change at contact temperature with change of volume relation given below

Q: How can we use Chemical Thermodynamics to explain different processes involving entropy?

A: Entropy : It is the measure of the total randomness  of the molecules or molecular disorder in a…

Q: b. How are the internal energies of chemical substances changed in a chemical reaction? State and…

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Q: 2.1. For the isothermal expansion of a gas into a vacuum, (a) Is this a spontaneous process? (b)…

A: a. During this constant temperature or isothermal, expansion into a vacuum, the gas does no work (w…

Q: Under what circumstance can the entropy of a system decrease for a spontaneous process?

A: Entropy measures the degree of randomness in the system. When a substance changes its phase solid to…

Q: Does the entropy of the surroundings increase for spontaneous processes?

A: The entropy is a measure of randomness of a system. In a spontaneous process, the entropy of the…

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

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Q: Explain in molecular terms why the entropy of a gas increases (a) with volume, (b) with temperature.

A: (a) The dispersion of energy and matter in the system indicates the entropy. By increasing volume…

Q: What is the entropy of a system that has only a single microstate?

A: Entropy is defined in the terms of randomness that a system possess or the disordered state. Change…

Q: Not all processes in which the system increases in entropy are spontaneous. How can this observation…

A: Second law of thermodynamics states that the entropy of an isolated system always increases but it…

Q: If the final temperature is 166.66K, determine the change in entropy for each substance.

A: Entropy (S) parameter in thermodynamic measure the randomness of the system it is a state function

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: A gaseous system undergoes a change in temperature and volume. What is the entropy change for a…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Under what circumstance can the entropy of a system decrease for a spontaneous process?

A: For any spontaneous process process, the value of ΔG < 0 And since ΔG = ΔH - T ΔS

Q: Predict the sign of the entropy change of the system for each of the following reactions.

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