Which substance has the higher entropy?(a) dry ice (solid CO2) at -78°C or CO2(g) at 0 °C(b) liquid water at 25 °C or liquid water at 50 °C(c) pure alumina, Al2O3(s), or ruby (ruby is Al2O3 in which some Al3+ ions in the crystalline lattice are replaced with Cr3+ ions)(d) one mole of N2(g) at 1 bar pressure or one mole of N2(g) at 10bar pressure (both at 298 K)

Q: A chemical reaction has a standard entropy change, ΔSo, of -287.8 J/(molK) and a standard enthalpy…

A: The given data you have - ΔSo = -287.8 J/K-mol ΔHo =  -138.1 kJ/mol

Q: Cyclopropane and propylene are isomers that both have the formula C3H6. Based on the molecular…

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Q: What is the total entropy change at 25°C for the reaction below, if the standard entropies of…

A: Given :-  The given reaction is      5C(gr) + 5H2(g) → C5H10(g) ...........(A) Sº (C(gr)) = 5.74…

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Q: The heat of fusion for water is 333.6 J/g. What is the entropy change for the universe when 1.00 L…

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Q: What is the total entropy change at 25oC for the reaction below, if the standard entropies of…

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Q: Cyclopropane and propylene are isomers that both havethe formula C3H6. Based on the molecular…

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Q: What is the total entropy change at 25oC for the reaction below, if the standard entropies of…

A: Given reaction at 25°C;  C6H10 (g) ↔ 6C (gr) + 5H2 (g) The standard entropies of reactants and…

Q: For the decomposition of mercury(II) oxide, HgO, to mercury and oxygen: 2HgO(s) → 2Hg(l) + O2(g)…

A: Standard entropy change is the difference of standard entropy of product from standard entropy of…

Q: The accompanying diagram shows how entropy varies with temperature for a substance that is a gas at…

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Q: (a) Using the heat of vaporization in Appendix B, calculatethe entropy change for the vaporization…

A: a) First calculate the entropy change of the given process at 25oC Given, The temperature of the…

Q: Determine the: a. Heat of the reaction, AH b. AS c. AG at 25°C for the combustion of ammonia,…

A: a.

Q: Predict the sign of the entropy change of the system foreach of the following reactions:(a) N2(g) +…

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Q: D. PCI, (s) → PCI,(1) + Cl, (g) The entropy, ASixn, mol Angas decreases. increases. has little or no…

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Q: Calculate the standard entropy change ΔS° for the following reaction, using the tabulated standard…

A: Consider the given reaction is as follows; N2 g + 3 H2 g → 2 NH3 g Given information is as follows;…

Q: The enthalpy of vaporization of methanol (CH3OH) is 35.3 kJ/mol at the boiling point of 64.2 °C.…

A: The vaporization can be defined as phase transition from liquid phase to vapor phase.

Q: Steam is condensed at 100 ‰, and the water is cooled to 0 ‰and frozen to ice. What is the molar…

A: Entropy change is given by ∆S=∆H/T ,where ∆H is change in enthalpy and T is temperature.

Q: 9. The standard enthalpy of vaporization of methanol is 35.2 kJ/mol at its normal boiling point,…

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Q: Without reference to any data tables, choose which member of the following pairs has the greater…

A: Entropy is defined as the randomness of the system.

Q: Predict the sign of the entropy change, AS, for the following processes. Indicate the reason for…

A: The reactions given are,

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

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Q: What is the standard molar entropy change of the following reaction? 8 NH:(g) + 10 O:(g) 8 NO(g) +…

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Q: If the AH = 287 kJ/mol and AS = 57 J/K mol for a nonspontaneous reaction, at what temperature does…

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Q: 12. For a particular chemical reaction ΔΗ= 6.8 kJ and A--29 JK. Under what temperature condition Is…

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Q: For each pair of substances, choose the one that you expect to have the higher standard molar…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: 3. Calculate the standard free-energy change ( AG° ) at 25°C for the reaction 2H2(g) + N2(g) =N¿H4…

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Q: 14. For mercury, the enthalpy of vaporization is 58.51 kJ/mol and the entropy of vaporization is…

A: The amount of heat required to convert substance present in liquid state to gaseous state is known…

Q: 1. The heat capacity at 1 atm. pressure of solid magnesium in the temperature range from 0 °C to 560…

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Q: N2H4 (g) + H2 (g) ---> 2N2H3 Would you expect the entropy change for the above reaction to >0,…

A: Given,One mole of hydrazine reacts with one mole of hydrogen produces two moles of ammonia.

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

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: How does the entropy of ice at −5°C diff er, if at all, from its entropy at −50°C?

A: Entropy- Entropy is a thermodynamic property. Entropy determines tendency of process. Tendency means…

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Q: When fumes of ammonia and fumes of hydrobromic acid meet, they form a “smoke” of solid ammonium…

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Q: 4. Arrange the following substances (1mole each) in order of increasing entropy at 25°C; (a)Neg) (b)…

A: A question based on increasing entropy of different substances, which is to be accomplished.

Q: Which of the following rcactions will have a positive change in entropy (ASn)? →2 NO2 (g) a) NO (g)…

A: Entropy ( S ) :  It is a measure of randomness or disorderness in system. Entropy is more in gaseous…

Q: What are the criteria for spontaneity(a) in terms of entropy and(b) in terms of free energy?

A: The Gibbs free energy is an important parameter to predict the feasibility of a process. The entropy…

Q: 1. The heat capacity at 1 atm. pressure of solid magnesium in the temperature range from 0 °C to 560…

A: Since you have posted multiple questions. we are entitled to answer the first only.

Q: What is the temperature at which the reaction below becomes spontaneous, if the standard entropies…

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Q: The entropy of vaporization of water is 109.0 J/mol · K. What is the enthalpy of vaporization of…

A: Given: Entropy of vaporization of water = 109.0 J/mol.K.

Q: Without reference to any data tables, choose which member of the following pairs has the lesser…

A: Entropy is defined as the randomness of the system.

Q: 16. Which among the following represents a positive change in entropy? O release of thermal energy O…

A: Entropy is defined as the randomness of a system. Thermal energy is also called heat energy. A…

Q: The accompanying diagram shows how entropy varieswith temperature for a substance that is a gas at…

A: Entropy is the measure of the randomness. More the randomness , more the entropy. Thus , entropy of…

Q: A reaction has AH°= 100 kJ/mol and AS°= 250 J/mol.K. Is the reaction spontaneous at room…

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Q: Determine the standard entropy of NO(g) given the following information NO(g)+0,(g) → NO,(g) ASn =…

A: Introduction: We have to calculate the entropy for NO(g).

Q: What is the total entropy change at 25oC for the reaction below, if the standard entropies of…

A: Given,∆S0 for Carbon= 5.74 J/mol K∆S0 for Hydrogen= 130.68 J/mol K∆S0 for C7H16= 130.68 J/mol K