For the reaction CaCO3(s) → CaO(s) + CO2(g) which is spontaneous only at high temperatures Group of answer choices ∆H is positive and ∆S is positive ∆H is negative and ∆S is positive ∆H is positive and ∆S is negative ∆H is negative and ∆S is negative

Q: Which process has a larger entropy change: melting ice or boiling water? Explain.

A: The entropy is the degree of randomness or disorder of matter. Gas particles have higher kinetic…

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Q: Estimate the boiling point of an unknown substance in deg C if the latent heat of vaporization of…

A: We have to predict the boiling point.

Q: actual change in free energy

A: As you have mentioned, in both parts, one of the three questions has to be packed and solved. That's…

Q: The conversion of n-butane to 2-methylpropane is an equilibrium process with ΔH° = −2.05 kcal/mol…

A:

Q: Using Thermochemical Data, calculate ΔS for the following reaction. Is entropy increasing or…

A: ANSWER IS

Q: 1. The magnitude of any enthalpy change depends on the conditions of temperature, pressure and state…

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

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Q: 1. The action of catalyst regarding the rate of reaction involves: A. Arranges the orientation of…

A: The answers are below

Q: Chloroform chci3 is a solvent and has been used as an anesthetic the heat of vaporization of…

A:

Q: 1. The magnitude of any enthalpy change depends on the conditions of temperature, pressure and state…

A: Entropy of a system is the measure of randomness. Higher disorder the system, higher is the entropy.

Q: Which of the following relationships is INCORRECT?  a Free Energy is zero, the process is in…

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Q: b. 2AB3(g) --> A2(g) + 3B2(g) + 394kJ Will enthalpy increase or decrease in the forward reaction?…

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Q: A student studies a reaction under various conditions and determines that it is exothermic and…

A: Sign of ∆H and ∆S can be determined from given information about reaction and its sponateity…

Q: Which of the following describes the entropy change in the given reaction? 2 ClO-(g) → 2 Cl2(g) + 7…

A: For the given reaction;  2 Cl₂O(g) → 2 Cl₂(g) + 7 O₂(g)  Sign of entropy = change in no of moles in…

Q: The molar entropies of methane and carbon dioxide at 25°C are 186.6 and 213.8 J/mol·K, respectively.…

A: The molar entropy in terms of microstates can be expressed as,…

Q: Describe one reversible process. Then, state whether the following actions increase entropy,…

A: The process in which the initial state of the system and its surroundings can be brought back…

Q: Which best describes the entropy change for the following process? 2 SO2(g) + O2(g) → 2 SO3(g) А.…

A: We know that, Entropy measure randomness. Gas having more randomness than solid and liquid.

Q: TRUE OR FALSE? 1. Entropy changes cannot be measured with a calorimeter like enthalpy changes. 2.…

A: 1. False Entropy change can be calculated from Calorimeter by using equation as follows;    ∆S  =…

Q: he second law of thermodynamics favors     A. processes that have zero entropy of the universe…

A: The given problem is based on the laws of thermodynamics.

Q: When ∆G is negative, a chemical reaction is   using up free energy   spontaneous   non-spontaneous…

A: ∆G is change in gibbs free energy.  Gibbs free energy determines the chemical energy of reaction.…

Q: Reagent Baeyer's reagent Alkane Alkenes Alkynes Aromatic Alkylbenzene Is there a reaction? What is…

A: Baeyer's reagent is alkaline potassium permanganate it can as oxidation agent .this oxidation will…

Q: Determine if each of the following processes is spontaneous or nonspontaneous. 1) water evaporating…

A: A spontaneous process is one that occurs without any external effort mainly because the reactants…

Q: Identify the change in state that does NOT have an increase in entropy.   a water evaporating   b…

A: Entropy - Measure the randomness or disorderness of molecule  Solid to liquid, liquid to gases…

Q: For a solid subliming to form a gas at a temperature higher than the solid's sublimation point, what…

A: Answer: Entropy is the measure of system's disorderliness or randomness. In possible states system…

Q: Describe how the following changes effect the positional entropy of a substance (explain).…

A: Entropy is an important thermodynamic parameter that can be used effectively to explain the various…

Q: Which of the following would be expected to have positive entropy change?   Cooling of nitrogen…

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Q: A. Indicate whether entropy increases or decreases and positive or negative in the following…

A: Entropy measure the randomness of system.  The order of intermolecular forces present in different…

Q: . What is true about the spontaneity of a reaction?     a.When the products have less enthalpy than…

A: In this question, we want to identify correct statement about spontaneity of a reaction. You can see…

Q: In an equilibrium reaction with a Keq of 1 x 10⁸, the... *     reactants are favored       reaction…

A: This is the concept of chemical equilibrium

Q: Which of the following is true if Esys = -346 J A. The system is gaining 346J while the surrounding…

A: If energy is gained by the system, then the sign of Esystem is positive, and if energy is lost by…

Q: Given the following chemical reaction occurring in a 2.00 L container: A (g) + 2 B(s) ↔ 4 C(g) + 3…

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Q: 51). Which of the following reactions would be expected to have a positive entropy change, AS°xn >…

A: The sign of entropy change of a reaction, ΔSorxn can be decided by checking the entropy of products…

Q: Which of the following statements is true? Group of answer choices A reaction that is only…

A: *"We know from the 2nd Law of thermodynamics that all spontaneous processes   are accompanied by a…

Q: Experimental observations of a biochemical reaction have indicated that the reaction releases free…

A: For a reaction to be spontaneous, delta G should be negative.

Q: 10.27) Without doing a calculation, predict whether the entropy change will be positive or negative…

A: Interpretation-  To predict whether the entropy change will be positive or negative when each of the…

Q: A certain reaction has negative value of both ∆H and ∆S. Therefore, the reaction   must be…

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Q: All spontaneous changes cause an increase in the entropy of the universe. True False

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Q: Consider the evaporation of methanol at 25.0 ∘C: CH3OH(l)→CH3OH(g). a) PCH3OH=154.0mmHg Express the…

A: The given reaction and the Standard Gibbs free energy is calculated as follows,

Q: Which has lower entropy? CO2(g) or CH4(g)?

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Q: Indicate whether each statement is true or false. If a system undergoes a reversible process, the…

A: Given: Reversible process is a process which can be reversed back to its initial state after…

Q: Predict whether the entropy change of the system in NH4Cl (s) —> NH3(g) + HCl (g) is positive or…

A: Entropy is the randomness of molecules. Entropy change is the difference in number of gaseous…

Q: System A |8 J System B | 8 J 7J 6J Energy 4J 3J |2J 4J 2J Question 21 options: System A has more…

A: The systems given are, Given: The number of particles is 3 And the total energy of particles is 12…

Q: Consider the reaction: 2 H,0(g) → 2H,(g) + 0,(g) If 2.0 moles of H2O(g) are converted to H2(g) and…

A: Step : 1               Calculate the change in internal energy for the reaction.

Q: Determine whether the change in entropy increases or decreases.The number 1 serves as an example.…

A: The measure of degree of randomness present in a substance is called entropy. Basically, entropy is…

Q: Evaluate each reaction below and using your knowledge of entropy, predict whether entropy will…

A:

Q: Indicate which substance in the given pairs has the higher entropy value. Explain your choices. a.…

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Q: 1. The magnitude of any enthalpy change depends on the conditions of temperature, pressure and state…

A: Solutions-

Q: Determine the AH for the overall reaction based on the three-step thermochemical processes below:…

A: The steps of the reaction given are,