The second law of thermodynamics states that _____ A) no engine can be 100% efficient B) transferring energy from a cold to a hot bath requires work C) the entropy of the universe increases with a spontaneous process D) all of these are true

Q: A certain reaction has a positive value of enthalpy change. which of the following statements is/are…

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Q: ow as it ripens D. A&B C. Throwing 50 coins results in all tails 8. According to the third law of…

A: Third law of thermodynamics states that  Entropy of a pure substance at perfectly crystalline state…

Q: Which of the following statements define the second law of thermodynamics? O All spontaneous…

A: Given: Different - different statements. To find : true statement regarding second law of…

Q: Consider the reaction at 298 K: 2 NO(g) + O2(g)¡2 NO2(g) ΔG°rxn = -71.2 kJCalculate ΔGrxn under…

A: The equation for Gibbs free energy of a reaction is given below,…

Q: 200 g of 80 C water is left to cool down to room temperature (25 C). (a) Determine the entropy…

A: Here 200 gram of water is cooled down to room temperature of 25°C. Here energy will be released from…

Q: a spontaneous process increass the entropy of ? the system the surroundings  the universe  None…

A: Answer is option (c) entropy of the universe increase

Q: Cite at least 3 examples of non-spontaneous phenomena.

A: This question belong to thermodynamics concept of spontaneity. We know that, ∆G = ∆H-T∆S…

Q: The rusting of iron is spontaneous and is accompanied by a decrease in the entropy of the system…

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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: Discuss the Free Energy under Nonstandard Conditions?

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Q: Given the following table of thermodynamic data,   Substance ΔH∘f(kJ/mol)   S∘(J/mol⋅K)   H2(g)…

A: The "spontaneous reactions" always favor "forward reactions" where more product gets yielded and…

Q: Which statement is true?a. A reaction in which the entropy of the system increases can be…

A: The entropy of a system deals with degree of disorderliness in the system . The spontaneity of a…

Q: Indicate whether each statement is true or false. (a) Thesecond law of thermodynamics says that…

A: (a) The statement is false, because entropy created is distributed to the surroundings. Entropy…

Q: The third law of thermodynamics is defined as     a. the combined mass and energy of the universe…

A: -> at absolute (0K) temperature all the modes of motion stops (no vibration , no translation and…

Q: The First Law of Thermodynamics

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

Q: What is an example of a system showing a decrease in entropy  a. Helium escaping a balloon b.…

A: In this question, we will select the correct statement which showing the Decreasing entropy of the…

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: For a spontaneous exothermic process, which of the following must be true

A: The given question tells that the reaction is spontaneous and exothermic

Q: 1. Briefly distinguish between the following: a) Spontaneous and Reversible processes b) Entropy and…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: All things trend toward disorder. When cups of hot milk are left on the table for a long period of…

A: The second law of thermodynamics : The second law of thermodynamics helps us to determine the…

Q: For a certain process,ΔH° = -35.4 kJ and ΔS° = -45.1 J/K. Calculate ΔG° for this process and…

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Q: What do standard states have to do with free-energy changes?

A: Standard state is like the reference state of the substance, the phase of the substance usually…

Q: A block of metal is warmed irreversibly at constant pressure from 267 K to 315 K. The heat capacity…

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Q: Chemistry Table 1 Standard Enthalpies and Entropies Substance Standard enthalpy of formation…

A: Spontaneity of a reaction can be determine from the value of ∆G of reaction.

Q: Identify whether the statement is true or false. All exothermic phase changes have a negative value…

A: Entropy is the measure of randomness or disorderness.

Q: Question attached

A: Given , mass of ice =100g  100 g H2O(s) at 0°C →∆S10  H2O (l) at 0 °C →∆S20 H2O (l) at 100°C →∆S30…

Q: Which of the following definitions correlate to the term spontaneous change? O Possible…

A: Spontaneous process: A spontaneous process is a process which occurs without any external input to…

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: Are the earth and sun in thermal equilibrium? Are there entropy changes associated with the…

A: 1. The earth and the Sun are not in the thermal equilibrium. As sun is much hotter or is having…

Q: Consider the following reaction for the combustion of octane occurring at 373 K: C3H18() + 25/2…

A: In first question we have given the combustion reaction. Combustion reactions are always exothermic…

Q: Determine if this reaction is spontaneous under standard conditions; knowing that the reaction's…

A: Spontanity of reaction is determined in terms of Gibbs energy formula.

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: State the first law of thermodynamics in terms of (a) the en-ergy of the universe; (b) the creation…

A: (a) According to first law of thermodynamics, the energy of the universe is constant. Because the…

Q: Laws

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

A: The correct option is:

Q: if the enthalpy change is negative and the entropy change is positive this reaction would be

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

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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: Indicate whether each statement is true or false. CO21g2 and Ar(g) have nearly the same molar mass.…

A: The degrees of freedom of rotational and vibrational motion are directly proportional to the number…

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

A: The entropy change can be  calculated using the formula, Where,∆H standard enthalpy of formation…

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: The second law of thermodynamics states that A. in a spontaneous process, the entropy of the…

A: First law of thermodynamics is concerned with the conservation of energy while the second law of…