) True or False?  If false, correct the statement.        a) The entropy of a substance increases when a substance changes from liquid to vapor at any temperature. b) Exothermic reactions are always spontaneous. c) Reactions with positive changes in enthalpy and positive changes in entropy can never be spontaneous.

Q: For which reactions does entropy favor the products? (see attachment)

A: In Thermodynamics, entropy is a thermodynamic state function that is defined as the measure of the…

Q: The second law of thermodynamics states that, like energy, the entropy of the universe is constant.…

A: The second law states that there exist a useful state variable called entropy S .

Q: Which of the following is true about the total entropy of the universe? A) It is always increasing…

A: Which of the statement is true about total entropy of the universe ?

Q: Frequently, when salts dissolve in water, the solution becomes warm. Such a process is exothermic.…

A: Endothermic process: It is the process in which the system absorbs heat from the surrounding and as…

Q: Does entropy increase when temperature decreases ? Can you explain why these are correct with this…

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Q: When work is done on a system (+ΔG) to bring it into an ordered state (-ΔS), of the following is…

A: In this question, we have to find out the correct answer of given problem by the help of "Gibbs free…

Q: the Laws of Thermodynamics, then explain in detail which law Entropy and Enthalpy would apply to.…

A: Thermodynamics is study of flow of heat. It consists of three laws which are as follows: 1st law of…

Q: What molecular property does entropy reflect?

A: ENTROPY Entropy is the measure of disorderness or randomness of the system. It is a thermodynamic…

Q: The entropy of a system always increases for a spontaneous process. O TRUE O FALSE

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Q: whether the entropy change will be positive or negative wl

A: The total entropy of a system either increases or remains constant in any process and it never…

Q: How does entropy predict the spontaneity of any process in the environment?

A: The measurement of the disorderedness of the system is defined as entropy. For example; the melting…

Q: TRUE OR FALSE Entropy of a system decreases with decrease in Temperature.

A: Entropy of a system decreases with decrease in temperature is true or false ?

Q: 9. For any substance, the only case entropy has a zero value, when *

A: The third law of thermodynamics :  The law states that the entropy of a purely and perfectly crystal…

Q: Why can endothermic reactions be spontaneous?

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Q: What general rules apply to predicting whether an entropy change is negative or positive

A: Thermodynamics is the branch of chemistry that mainly deals with the heat transfer between system…

Q: What is the chemical significance of a negative enthalpy change and a negative entropy change?

A: Enthalpy change is nothing but the amount of heat evolved or absorbed during a chemical reaction at…

Q: Determine the entropy of * NH₂Cl(s) → NH3(g) + HCl(g) > positive negative

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Q: The second law of thermodynamics states that for a process to be spontaneous:         (A) The…

A: According to second law of thermodynamics, the overall entropy of the whole universe is always…

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

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Q: What is the precise definition of entropy?

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

Q: If energy can flow in and out of the system to maintain a constant temperature during the process,…

A: Given, If energy can flow in and out of the system to maintain a constant temperature during the…

Q: At constant pressure, what is the value of entropy change? o C, -dT T nRln-

A: Option (2) CpdT

Q: What happens to the entropy of a sample of the matter when it changes state from a solid to a…

A: Entropy of a system is defined as the measure of randmnoss,or disorder. Entropy is an extensive…

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

A: Entropy refers to measure of disorder and randomness. For a reaction, standard entropy change of…

Q: A reaction will always be spontaneous if the change in enthalpy is (positive or negative) and the…

A: Gibbs free energy is a measure of maximum reversible work that can be extracted from a system at…

Q: If a reaction is exothermic it is spontaneous. True or false

A: In this question, we will discuss About a Reaction is exothermic then it is spontaneous or not means…

Q: Neither the change in enthalpy nor the change in entropy is, by itself, sufficient to determine…

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Q: Give an example of a spontaneous process in which a system becomes less ordered and energy becomes…

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Q: Calculate the standard entropy change for the reaction; CO2(g) + H20(1) → CH4(9) + O2(g) Note:…

A: The balanced chemical equation is,

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: Do you need to specify the temperature to calculate the entropy change? Explain.

A: Entropy is the measure of randomness or chaoticness . With increasing in the randomness or…

Q: 1. How is entropy change determined? What data are needed for the calculation? 2. What general rules…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: Which process results in an entropy change less than 0?

A: Entropy (s) :-  Entropy is a measure of randomness or disorderness present in the system If in a…

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: For which of the processes does the entropy of the system increase?

A: The disorderness or randomness present in a molecule is termed as its entropy.

Q: Laws

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Q: Which of the following involve an increase in the entropy of the system? Briefly explain how…

A: The process that involves an increase in the entropy of the system has to be identified .

Q: Please answer question A and B.

A: a) For a spontaneous process, entropy of the universe always increases. This is because the Sun, and…

Q: How does the entropy of the surroundings change duringan exothermic reaction? An endothermic…

A: Entropy of surrounding will increase during an exothermic reaction because heat is absorbed by…

Q: Does the entropy of the system increase, decrease, or stay the same when the volume of a gas…

A: Entropy is the thermal energy of a system per unit of temperature. This energy is not available for…

Q: Which process results in the increase in entropy of the universe?

A: Entropy is the randomness or disorderness in a system. The change in entropy is positive when…

Q: Explain how entropy changes in the process of flambéing (combustion of ethanol). Be sure to include…

A: Given question is :  Explain the entropy changes in the process of the flambeing (combustion of…

Q: What is entropy, and what is ΔS for a reaction, and what does it mean if ΔS is positive or negative?

A: Answer  The measurement of randomness is called entropy, entropy…

Q: describe the behavior of the entropy of a substance as it changes phase from solid to liquid to gas

A: Increasing order of entropy : Solid < Liquid  < Gas Entropy will increase when solid converts…

Q: Determine if liquid water will spontaneously freeze at -10.00°C? Is it spontaneous at +10.00°C? What…

A: The process of conversion of ice into water is known as melting. The temperature at which this…

Q: In a process, 3 mol of an ideal gas (Cp= 2.5 R) and 1 atm change to 125°C and 5 atm. Calculate the…

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Q: Gibbs free energy is the sum of enthalpy change and the product of temperature and entropy. a. True…

A: Gibbs free energy:  It is a thermodynamic quantity that helps in the prediction of the spontaneity…

Q: Write an essay. The second law of thermodynamics says that the entropy of the universe is constantly…

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