Can a process be spontaneous at one temperature and nonspontaneous at a different temperature?

Q: A process cannot be spontaneous if_ O it is exothermic, and there is an increase in disorder O it is…

A: ∆G= ∆H -T∆S for a spontaneous reaction free energy should be always negative.

Q: Explain the difference between a spontaneous and non-spontaneous process, and provide an example of…

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Q: Consider the decomposition of yellow mercury (II) oxide. HgO (s,yellow) ⟶ Hg(l) + 1/2 O2(g)…

A: Given that, the decomposition of yellow mercury (II) oxide HgO (s, yellow) ⟶ Hg(l) + 12O2(g). Also,…

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: Explain the difference between a spontaneous and non-spontaneous process, and provide an example of…

A: Difference between spontaneous and non-spontaneous process :

Q: In a particular spontaneous process, the entropy of the system decreases. What can you conclude…

A: Spontaneous process: In thermodynamical terms, a spontaneous process is a process in which…

Q: Determine if the following reaction is spontaneous at 298K BaCO3(s) ↔ BaO(s) + CO2(g) ΔHf˚ =…

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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: Describe how entropy and enthalpy combine for the overall determination of spontaneity. What values…

A: The Gibbs equation, shown in equation (1) where ΔH is the enthalpy change, ΔS is the entropy change,…

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: In a particular spontaneous process, the number of microstates availableto the system decreases.…

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Q: How can a system or chemical reaction have a negative entropy change and be spontaneous?

A: Chemical reaction:

Q: Give an example for each of the following and provide an explanation.   1. A spontaneous process 2.…

A: A spontaneous process is the process which takes place on its own without any external force.

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: Under what conditions does an increase in temperature turn a nonspontaneous process into a…

A: For a spontaneous reaction, ∆G (change in Gibbs free energy) must be negative.

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: 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: It is determined that a particular chemical reaction has AH°rxn = 105 kJ and As°rxn = 252 JK1.…

A: For spontaneous reaction delta G must be negative....

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: How is the third law of thermodynamics interpreted in a microscopic thermodynamic sense

A: According to the third law of thermodynamics, the entropy of a perfect crystal is zero at 0 K. It is…

Q: Is this reaction endergonic or exergonic, spontaneous or non-spontaneous? Justify

A: Exergonic reaction:  The chemical reaction in which free energy decreases i.e.ΔG is negative are…

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: Define Spontaneous and Nonspontaneous Processes?

A: Spontaneous Process:  The process which can take place by itself or by initiation independent of the…

Q: Does the thermodynamic term spontaneous refer to a process that takes place quickly?

A: To find: whether spontaneous refer to a process that takes place quickly thermodynamically?

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

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

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

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

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Q: enumerate at least three examples each for a spontaneous reaction and a nonspontaneous reaction

A: A spontaneous reaction is a reaction which occurs without the help of an external force or energy.…

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: Use the appropriate symbol to represent a non-spontaneous process (>, <, =)  ∆G ________________ 0…

A: ∆G represents change in Gibbs free energy.∆E represents change in Internal energy .K represents…

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

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Q: Describe Gibbs' free energy and give an example of a spontaneous process.

A: The process which occur by itself without any external energy is known as spontaneous process.

Q: What is the molar entropy of a pure crystal at 0 K? What is the significance of the answer to this…

A: The third law of thermodynamics states that entropy of a pure crystal at a temperature of zero…

Q: Which of the following processes are spontaneous and which are nonspontaneous: (a) the ripening of a…

A: Spontaneous process The process that can take place without the assistance of any external factor is…

Q: Why do exothermic processes tend to be spontaneous at low temperatures?

A: Why do exothermic processes tend to be spontaneous at low temperatures?

Q: Under what circumstances may the properties of the system alone be used to identify the direction of…

A: A reaction which occurs without any intervention in the given set of conditions is termed as…

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: How can a non-spontaneous process be made spontaneous?

A: Feasibility of a reaction depends on the change in Gibbs free energy. The value of change in Gibbs…

Q: iven the following table of thermodynamic data, complete the following sentence. Substance ΔH°f…

A: Given : We have to predict which is condition is correct for given data.

Q: Is this a spontaneous or nonspontaneous process?

A: Is this a spontaneous or nonspontaneous process?

Q: TRUE OR FALSE The spontaneous process proceeds on its own without any outside assistance.

A: The given statement is, The spontaneous process proceeds on its own without any outside assistance…

Q: What is a spontaneous process? Provide an example?

A: Spontaneous process are those reactions that take place instantaneously without any external force.…