Explain how the internal energy and entropy of a system composed of two levels vary with temperature.

Q: If enthalpy is +220 kJ for a reaction and entropy is +120 J, at what temperature is this…

A: The spontaniety of any reaction is decided by the Gibb's free energy change if the reaction. Any…

Q: 8.1 g of Ar are confined in a 8.0 L container at 310 K. The gas is expanded adiabatically and…

A: isothermal process is a process where there will be no change in the temperature so we say change in…

Q: 15.) Which of the following systems has the greatest change in internal energy? A.) A mixing of two…

A: The internal energy of the system is the sum of all types of energy of the system. During the change…

Q: Based on its fundamental definition, explain why entropy is a measure of energy dispersion.

A: The entropy of state is related to the number of ways to arrange the components of the system have…

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

A: Chemical reaction:

Q: 00 mol He gas, regarded here as a perfect gas, und <pansion at 20.0 °C from 1 atm to 3 atm.…

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Q: Derive a relationship between ΔH and ΔE for a process in which the temperature of a fixed amount of…

A: ENTHALPY Enthalpy of a system is defined as the sum of its internal energy and product of its…

Q: why do so many thermodynamic processes happen in one direction but never the reverse?

A: There are two types of thermodynamic process based on the reversibility of the process- irreversible…

Q: what is entropy?

A: Entropy(S)- Entropy is a thermodynamic property. Entropy determines spontaneity of process.…

Q: Define Standard States and Standard Entropy Changes?

A: Generally in chemistry standard state can be defined as the reference pint used to calculate its…

Q: What is the change in entropy in a large mass of water at 50 °C when it receives 155 kJ of energy in…

A: Answer is explained below. Given that, the change is reversible and the mass of water is large…

Q: Given the equation: 4NH3(g) + O2(g) → 4NO(g) + 6H2O(g). What is the standard molar entropy change…

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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: 15. When two systems are in contact with each other, energy will move between them to reach…

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Q: Relate entropy to disorder in a molecular system (energy dispersal).

A: Entropy is a thermodynamic property that helps to estimate the thermal energy per unit temperature…

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: 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: 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: In the expression, S = k In W, W is caled the number of microstates. Explain clearly the meaning of…

A: The system can exist in a discrete (but possibly infinite) set of microstates. A microstate defines…

Q: The entropy change for the process H2O(s)⟶H2O(l) is 15.2 J/K and requires that the surroundings…

A: Reaction: H2O(s) ⟶ H2O(l) ∆Ssystem = 15.2 J/K ∆H = 38.6 KJ ∆STotal =? T = 76.3 °C = 76.3 + 273.15 =…

Q: What happens to the entropy of an isolated system during an irreversible process?

A: For isolated system, there is no exchange of heat or energy between system and surrounding.  Hence,…

Q: It is the study of the heat or energy involved in physical and chemical changes. Thermodynamics…

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Q: State the 3rd law of thermodynamics. How is it interpreted in microscopic thermodynamic sense?

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