The element oxygen was prepared by Joseph Priestley in 1774 by heating mercury(II) oxide:          HgO(s) → Hg(l) + 1/2O2(g), ΔH° = 90.84 kJ/mol. Estimate the temperature at which this reaction will become spontaneous under standard state conditions.          S°(Hg) = 76.02 J/K·mol          S°(O2) = 205.0 J/K·mol          S°(HgO) = 70.29 J/K·mol

Q: If ΔHΔHDH = -70.0 kJkJ and ΔSΔSDS = -0.200 kJ/KkJ/K , the reaction is spontaneous below a certain…

A: In this question we want to determine the temperature ( below this Temperature Reaction is…

Q: 1. In which of the following cases do you observe a spontaneous process? А. AS = 10 J/K, AS =-10 J/K…

A: We are authorised to solve only one question at a time. Since you have not mentioned, we are solving…

Q: At what temperatures is the following process spontaneous at 1 atm? ΔH° = +20 kJ and ΔS° = - 50 J/K

A: The reaction is always non-spontaneous at all temperatures.

Q: For each reaction with ΔH = + 187 kJ/mol and ΔS = + 365 J/molK ,at what temperature at which the…

A: Given: ΔH = +187 KJ/mol or +187000 J/mol ΔS = +365 J/molK We have to calculate temperature(T) at…

Q: (a) What is the maximum electrical work obtainable from the reaction | 0,(g) + H,(g) = H,O(1) %3D…

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Q: Using appendix C values, calculate the delta H for the following reactions:4NH3(g) + O2(g)…

A: The required reaction is given below.

Q: Given the chemical reaction:  2 NO2 (g) → N2O4 (g) where ΔH∘∘ = −57.2 kJ/mol and ΔS∘∘ = −176…

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Q: Which of the following are spontaneous processes? 1. Ice melting at 1atm and 298 K (assume only ice…

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Q: For the combustion of CO(g): 2CO(g) + 02(g) 2CO2(8) the reaction is spontaneous at 25 °C. What can…

A: First, calculate the standard enthalpy of the reaction as follows: ∆H° = 2∆H°CO2(g) -  2∆H°CO(g)+…

Q: Does someone know the standard entropy values in J/K for H2(g), F2(g) and HF(g)?

A: The standard entropy values of hydrogen and fluorine gases are 130.6 J/Kmol and 202.8 J/Kmol…

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

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Q: A certain reaction is spontaneous at 25°C. If the enthalpy change for the reaction is 29.8 kJ/mol,…

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Q: (a) Can endothermic chemical reactions be spontaneous?(b) Can a process be spontaneous at one…

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

Q: The heat of vaporization of carbon disulfide, CS2, at 25 C is 27.2 Kj/mol. What is the entrophy…

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Q: (Q74) A certain process is nonspontaneous at low temperatures. Given that AHrxn = 222.2 kJ and ASrxn…

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Q: What is the ∆G° if ∆H° is +42.7 kJ and ∆S° is +88 J/K? (SHOW CALCULATIONS) b) Is it spontaneous?…

A: ∆H°=+42.7kJ =42.7 × 1000 = 42700joule ∆S°= +88J/K ∆G°=?

Q: 8. Use the free-energy information data on the table of Standard Thermodynamic Properties for…

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Q: If a process is exothermic and not spontaneous, then what must be true?     ∆S 0   ∆H > 0   ∆H…

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Q: “Thermite” reactions have been used for welding metal parts such as railway rails and in metal…

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Q: Spontaneous Process Q: consider the vaporization of liquid water at 1 atmosphere. 1. Is the process…

A: Spontaneous process :-  A process is said to be spontaneous if it takes place by itself without the…

Q: For a certain reaction, ΔH = -35.4 kJ/mol and ΔS = -85.5 J/K mol. Is this reaction endothermic or…

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Q: Which of the following statements correctly describe the second law of thermodynamics? I. Heat will…

A: Second  law of thermodynamics

Q: The following reaction for the formation of glucose from carbon dioxide and water:…

A: The given reaction is,

Q: An ice cube at 0 C melts when placed inside a room at 22 C (295 K). Based on the concepts of…

A: We need to identify the concept of spontaneity behind melting of ice according to thermodynamics.

Q: At what temperature or range of temperatures will a reaction be spontaneous if the value of H° =…

A: ∆G = ∆H- T∆S If ∆G < O spontaneous reaction If ∆G > O  non spontaneous reaction

Q: Consider the decomposition of liquid benzene, C6H6(l), togaseous acetylene, C2H2(g):C6H6(l)…

A: a) C6H6(l) -----> 3 C2H2(g) ΔH = +630 kJ  the enthalpy change for the reverse reaction  3 C2H2(g)…

Q: Consider the following reaction: 2 O3(g)  →  3 O2(g)    ΔS∘∘ = 137.4 J/K;  ΔH∘∘ = −285.4 kJ…

A: To calculate ΔGo for the given reaction.

Q: A chemist pours two chemicals in a beaker and observes their reaction. The Lable below shows the…

A: The nature of reaction can be determined on the basis of given data values.

Q: For a particular reaction, Δ?∘=−28.4 kJ/mol and Δ?∘=−87.9 J/(mol⋅K). Assuming these values change…

A: Given: ΔHo = -28.4 KJ/mol = -28400 J/mol. And the value of ΔSo = -87.9 J/mol.K.

Q: 8. Use the free-energy information data on the table of Standard Thermodynamic Properties for…

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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: The entropy change for the process                                      H2 O(s) ⟶ H2 O(l)is 22.1 J/K…

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Q: 2 O3(g) → 3 O2(g) ΔS∘∘ = 137.4 J/K; ΔH∘∘ = −285.4 kJ Calculate ΔG∘∘ at 55°C and determine…

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Q: If the process is exothermic and not spontaneous, then what must be TRUE? O a. AS> 0 O b. AS0 O d.…

A: Exothermic process heat is given by system... Endothermic process heat given to the system...

Q: For the reaction 2 NH3 (g) --> N2 (g)+ 3 H2 (g) , ∆H = +92 kJ. Which of the following is true?…

A: The given reaction is,  2 NH3 (g) --> N2 (g)+ 3 H2 (g) , ∆H = +92 kJ ∆H is positive, that means…

Q: ion 3: (a) What is the second law of thermodynamics? For any process, there are four possible sign…

A: Given,                             Enthalpy of Vaporization = 58.51 KJ / mol…

Q: The element oxygen was prepared by Joseph Priestley in 1774 by heating mercury(II) oxide: HgO(s) →…

A: Given chemical equation:  HgO(s) ------> Hg(l) + 1/2O2(g) For a reaction to be spontaneous,…

Q: For a reaction for which AH = -142 kJ/mol and AS = -178 J/mol· K, which of the following statements…

A: If ∆G is negative, the process is spontaneous and may proceed in the forward direction. If ∆G is…

Q: The following reaction is spontaneous at room temperature: N2(g) + 3H2(g) → 2NH3(g) For this…

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Q: For a reaction, the enthalpy change is –210 kJ, the entropy change is –170 J/mol.K  and the…

A: Given that: dH° = -210KJ dS° = -170J/K.mol = -(170J×1KJ/1000J)/K.mol = -0.170KJ/K.mol T = 400K

Q: Which of the following statements correctly describe the second law of thermodynamics? I. Heat will…

A: Answer  Second law of thermodynamics The first law of thermodynamics state…

Q: A reaction has ∆H=+19.8 kJ and ∆S=+95.3 J/K at 298K.  Calculate the temperature in Kelvin that the…

A: Given information:  ∆H=+19.8 kJ ∆S=+95.3 J/K  T = 298 K ∆G = ? We have to find out ∆G from the given…

Q: Consider the following reaction.  Use the information here to determine the value of ΔSsurr at 355…

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Q: Which of the following processes is both exothermic (at 1 atm) and spontaneous? A) Sublimation of…

A: The process which is both exothermic and spontaneous is condensation of water at 99.5°C.

Q: Consider the following reaction occurring at 25C Nitrogen monoxide gas reacts with hydrogen gas to…

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

Q: For a particular reaction, AH = -46.7 kJ and AS =-123.8 J/K. Assuming these values change very…

A: ∆H°=-46.7KJ ∆S°=-123.8J/K ∆H°-T∆S°=0

Q: For the reaction below ΔG° = +33.0 kJ, ΔH° = +92.2 kJ, and ΔS° = +198.7 J/K. Estimate the…

A: The given data : ΔG° = 33.0 kJ ΔH°= +92.2 kJ ΔS°= +198.7 J/K To determine : The temperature of the…

Q: 4. The entropy change for the process H2O(s) → H2O(1) is 22.1 J/K and requires that that…

A: Given:  ∆Ssystem = 22.1 J/K  qsystem = -qsurrounding = 6.0 KJ = 6000 J  Temperature (T) = 10°C = 283…

Q: Given the data below, calculate the temperature at which the reaction becomes spontaneous: N2 (g) +…

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Q: At what temperatures will the following processes be spontaneous?    ΔH= -18 kJ and ΔS= 65 J/K

A: Given: the value of enthalpy change (∆H) = -18 KJ The value of entropy change (∆S) = 65 J/K For a…

Q: Consider the decomposition of liquid benzene, C6H61l2, togaseous acetylene, C2H21g2:C6H61l2 ¡ 3…

A: Decomposition reactions are one in which the reactants get splits into one or more than one…

Q: For a given reaction, dH = 32 kJ/mol and dS = 117 J/mol. At approximately what temperature would…

A: The spontaneity of the reaction can be determined by the change in Gibbs free energy. The relation…

Q: For each reaction with ΔH = + 245 kJ/mol and ΔS = + 48 J/molK ,at what temperature at which the…

A: The question is based on the concept chemical thermodynamics.   We have been given entropy &…

Q: If a process is exothermic and not spontaneous, then what must not be true? a) AG>0 b) AH0 d) AS<0

A: For exothermic process, ΔH &lt; 0 For non spontaneous process, ΔG &gt; 0

Q: For a particular chemical reaction H = 6.8 kJ and S = –29 J/K. Under what temperature condition is…

A: The Gibbs free energy change for a reaction is negative for a spontaneous reaction and is zero for a…

Q: Without doing any calculations or using Sf data, arrange each group in order of increasing entropy.…

A: Always a gaseous (vapor) substance of same material have highest entropy compare to its liquid and…

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: If the process is exothermic and not spontaneous, then what must be TRUE? O a. AS0 O c. AH=0 O d.…

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Q: (Q74) A certain process is nonspontaneous at low temperatures. Given that AHrxn = 201.2 kJ and = 876…

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Q: The enthalpy and entropy changes for a reaction at 298 K are ∆H = 46 kJ and ∆S = 190 J/K. Which of…

A: Spontaneity of any reaction is defined by the value of ΔG of the reaction. The reaction will be…