What is the entropy at SATP of a reaction where ∆Hºrxn=12.5 kJ and Keq=32.1?   -65.8 J/K   70.8 J/K   -29.4 J/K   29.4 J/K

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…

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: The heat of vaporization of carbon disulfide, CS2, at 25°C is 27.2 kJ/mol. What is the entropy…

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Q: 10. What is the sign (positive or negative) of the entropy change (AS) for each of the following: a.…

A: Given :-  a) H2O(l) → H2O(g)   b) N2(g) + 3H2(g) → 2NH3(g)  To determine :-  Sign for ∆S for given…

Q: TRUE or FALSE:  1 mole of Br2(g) has more entropy than 1 mole of Br2(liq

A: Entropy is a measure of degree of randomness of a system.

Q: 9. Argon (Ar) amounting to 80 grammes expands isobarically (P = const) %3D until its volume doubles.…

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Q: For each pair, choose the substance with the greater entropy. A. Solid CO2 or gaseous CO2 B. 1 mol…

A: Entropy is the measurement of disorder or randomness in the system.

Q: Determine if the entropy increases or decrease during the following processes and determine fhe…

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Q: What is the entropy change when 0.88 moles of CHCI: vaporizes at 61.0 °C? [AH(vap) = 29.6 kJ/mol at…

A: Number of moles = 0.88 moles  ∆H(vap) = 29.6 KJ/mol  Temperature = 61.0 °C  Entropy change = ?

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

A: Entropy is the degree of disorderness or randomness. More closely packed the molecules, lesser will…

Q: certain substance has an enthalpy of fusion of 4.73 kJ/mol and an entropy of fusion of 21.2 J/mol/K.…

A: We know ∆H=∆S×T ∆H=4730j/mol ∆S=21.2j/mol/k So T=4730÷21.2=223.11k

Q: Consider the following equation:                       C2H4 (g)    +    H2 (g)   →    C2H6 (g)…

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Q: 8) For the reaction at 298 K, 2NO2(g) --> N2O4(g) The values of ΔH=−58.03 kJ and ΔS=−176.6 J/K. What…

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Q: А. 2 H, (g) + 0,(g) 2 H,O(1) The entropy, ASixn, mol Angas has little or no change. decreases.…

A: The Δngas of any reaction is defined as, => Δngas = sum of number of gaseous molecules in product…

Q: Calculate the entropy of the equation below: CaCO3(s) → CO2(g) + Cao (s) CaCO3(s) = 92.9 J/K.mol…

A: The balanced chemical equation is: CaCO3(s)  ---->CaO(s) + CO2(g)

Q: For each of the pairs of substances listed below, CIRCLE the substance that you expect to have the…

A: Entropy of the substance measure the degree of randomness. Entropy is represent by symbol S. Entropy…

Q: State whether the sign of the entropy change expected for each of the following processes will be…

A: Entropy is a thermodynamic quantity that is a measure of randomness. The more entropy, the more will…

Q: Above what temperature does the following reaction become nonspontaneous? N204(9) + 4 H2(g) → N2(9)…

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Q: At 25°C, the formation of ammonia from its elements results in a decrease in entropy (∆SRXN = -197…

A: we have to calculate the value of ∆SUNIV

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: Chloroform, CHCl3, is a solvent and has been used as an anesthetic. The heat of vaporization of…

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Q: State whether the sign of the entropy change expected for each of the following processes will be…

A: Answer :             1. ∆S is negative.             2. ∆S is positive. Explanation :            We…

Q: The normal boiling point of water is 100.0 °C and its molar enthalpy of vaporization is 40.67…

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

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Q: 1. 4NH3(g) + 5O2(g)4NO(g) + 6H2O(g) for which H° = -905.2 kJ and S° = 180.5 J/K at 298.15 K. (1)…

A: 4NH3(g) + 5O2(g)4NO(g) + 6H2O(g) for which H° = -905.2 kJ and S° = 180.5 J/K at 298.15 K.…

Q: g_2021 [References] Chloroform, CHC13, is a solvent and has been used as an anesthetic. The heat of…

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Q: The normal boiling point of C2Cl3F3 is 47.6 °C and its molar enthalpy of vaporization is 27.49…

A: The change in entropy in the system in J/K when 19.4 grams of C2Cl3F3 vaporizes to a gas at the…

Q: Given these values, ΔHorxn = +75 kJ; ΔSorxn = +120 J/K; T = 298 K; calculatethe free energy change…

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Q: Predict which substance has greater molar entropy. Explain. (a) CH4(g) or CCl4(l) (b) NO2(g) or…

A: Comparison of molar entropies for different compounds

Q: What is the entropy change when 0.17 moles of CHCl₃ vaporizes at 61.0 °C? [∆H(vap) = 29.6 kJ/mol at…

A: From datas given We are using below formula to calculate entropy change by plugging all values as…

Q: What is the entropy change when 1.55 moles of CHCl₃ vaporizes at 61.0 °C? [∆H(vap) = 29.6 kJ/mol at…

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Q: a. ENTROPY: Predict the sign of the change in entropy for the following processes. (Positive/…

A: 1. Decomposition of carbonic acid into water and carbon dioxide is associated with positive change…

Q: (Q67) What is the entropy change (in J/K) in the universe (ASuniverse) that occurs when nitrogen and…

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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: 1. Iron(II) oxide (FeO) is used in cosmetics and in tattoo inks as a dye. Iron(II) oxide reacts with…

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Q: For each process predict the sign of the entropy change taking place. A. Solid sugar is added to…

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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: reaction does not move forward and backward (meaning only move to one direction; could be product…

A: Direction of reaction is determined by the help of Gibbs free energy change (□G) For product favored…

Q: State whether the sign of the entropy change expected for each of the following processes will be…

A: Thermodynamics is the study of flow heat in the system. The entropy is a thermodynamic quantity that…

Q: Predict the sign of the entropy change, ΔS, for the following processes. Explain the reason for each…

A: Few questions based on chemical thermodynamics, which is to be accomplished.

Q: 20) Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:…

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Q: 6. Use the chart to answer parts (a), (b), and (c) of this question. (a) Predict the sign of the…

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

Q: III. Indicate whether each of the following processes produces an increase or decrease in the…

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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: Chloroform, CHCl3, is a solvent and has been used as an anesthetic. The heat of vaporization of…

A: First calculate the heat of vaporization for 1.30 mol chloroform at its boiling point.

Q: Dry Ice (CO2 (s)) sublimes above 0 degree celsius. What would the sign of the entropy of sublimation…

A: Given: Dry ice i.e. solid CO2 sublimes at 0 oC. And the temperature of the reaction is 298K.

Q: Solve this problem

A: Given, Standard entropies: SoHgO = 70.29 J mol-1 K-1SoHg = 76.02 J mol-1 K-1SoO2 = 205.14 J mol-1…

Q: What is the entropy when 1.13 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

A: The moles of CCl2F2 is = 1.13 moles The temperature of vaporization is = 25oC = 25oC+273.15 = 298.15…

Q: 11. For which of the following reactions will the entropy of the system decrease? A. 2 NH3(g) …

A: Gas has more entropy than liquid which have more entropy than solid. In the above reaction D. there…

Q: Calculate ΔS° for each of the following reactions. Explain the sign of ΔS° based on the molecular…

A: Entropy is defined as the degree of randomness or disorderliness of the System.   if the molecules…