Is this reaction spontaneous? Why or Why not?  CaC2(s) + 2H2O(l) ---> C2H2(g)  + Ca(OH)2(s) Delta H(rxn)= -128.9kJ Substances: CaC2(s)= S(1/mol*K)= 70.0 Delta H(f) (kJ/mol)= -59.8 H20(l)= S= 69.9 Delta H= -285.8 C2H2(g)= S= 200.8 Delta H= ? Ca(OH)2= S= 83.4 Delta H= -986.1

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: 2 AgNO3 (s)  +  SO2 (g)      →     Ag2S (s)  +  2 NO2 (g)  +  2 O2 (g) Is the reaction spontaneous…

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Q: Consider the following chemical reaction:   C6H6(l) + O2(g) --------------> CO2(g) + H2O(g)…

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Q: Which of these reactions is expected to be spontaneous at all temperature?          (A

A: We have to tell which reactions is expected to be spontaneous at all temperature

Q: You are studying the decomposition of CaCO3(s). CaCO:(s) → Cao(s) + CO2(g) ) At what temperature…

A: Given reaction:  Decomposition of CaCO3(s)

Q: Methanol is relatively inexpensive to produce. Much consideration has been given to using it as a…

A: ∆SCH3OH = 126.8 kJ/mol ∆SCH4 = 186.264 kJ/mol ∆So2 = 205 kJ/mol

Q: 6. A reaction has a AH° of -29 kJ and AS° is -60. J/K. Calculate the temperatu from spontaneous to…

A: Spontaneous reactions are those reactions which proceed on their own without any external force.…

Q: 41. Which of the following is TRUE for a non-spontaneous process? AH = TAS AH TAS

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Q: Fe,O; (s) + 2Al (s) → Al,O; (s) + 2 Fe (s) a. Is the reaction spontaneous at room temperature under…

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Q: Calculate how much heat (in kilojoules) a hand warmer containing 23.0 g of iron powder produces.

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Q: Consider the reaction 2O(g) → O2(g) Predict the signs of ΔH and ΔS Would the reaction be more…

A: Given: 2O(g) → O2(g)

Q: Methanol (CH3OH) burns in oxygen to form carbon dioxide and water. Write a balanced equation for the…

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Q: Consider the reaction: 2 POCl3 (g) -> 2 PCl3 (g) + O2 (g) A) Calculate DGrxn° for the reaction…

A: Free energy helps us in determining whether the reaction is spontaneous or non-spontaneous. The…

Q: Hello, I completed this problem, but I'm getting something wrong. Could you help?

A: To find temperature at which reaction becomes spontaneous.

Q: Octene (C8H16) can be converted into octane (C8H18) following the reaction below. ΔH° for the…

A: For spontaneous reaction ∆G is negative

Q: CCl4 (l)    CCl4 (g)      At what temperature does the phase change become spontaneous?  (Give in…

A: Answer is explained below.  For this problem required thermodynamic parameters are as follows:

Q: SO2(g)+2H2S(g) --> 3/8S8(s)+2H2O(g)  at what temperature does the reaction become spontaneous?

A: Since the reaction becomes spontaneous when the net gibbs free energy change of the reaction becomes…

Q: 2 NH3 (g) + 2 O2 (g) → N20 (g) + 3 H20 (g) Is this reaction spontaneous only at low temperatures,…

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Q: Calculate the crossover temperature at which the reaction N2(g) + 3H2(g) > 2NH3(g) becomes…

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Q: Given the ΔH° and ΔS°, calculate the ΔG° values for the following reactions and indicate whether the…

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Q: For the decomposition of mercury(II) oxide, HgO, to mercury and oxygen: 2H9O(s) --> 2Hg(I) + O2(g)…

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Q: For each reaction, calculate AHan ASn and AGan at 25 "C and state whether or not the reaction is…

A: Standard heat of formation of N2O4 (ΔHfo) = 9.16 KJ/mol. Standard heat of formation of NO2 (ΔHfo) =…

Q: Consider the following reaction at constant P. Use the information here to determine the value of ΔS…

A: If ∆S comes out to be positive then it would be considered as spontaneous otherwise negative then…

Q: 23. In a reaction, the change in entropy is given as 2.4 cal/K and the change in Gibbs free energy…

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Q: Photosynthesis in plants converts carbon dioxide and water into glucose and oxygen. Calculate the…

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Q: Standard molar entropies for CO(g), CO2(g), and O2(g) are 197.9, 214.0, and 205.0 in J/mol K,…

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Q: Spontaneous combustion of gasoline (C8H18) in a car engine, results in a large amount of energy…

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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: Ribozomes in your body create proteins by combing amino acids together. What are the signs of AG,…

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Q: 4. According to the 2 law of thermodynamics, ASi must be positive for a process to be spontaneous.…

A: SYSTEM: System is that part of universe which we are experimenting on or which we are considering.…

Q: Which of the following relationships is correct? A) Delta G > 0 represents an increase in kinetic…

A: Free energy is a measure of spontaneity of chemical process.

Q: Classify each statement as true or false.

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Q: 12) Calculate AG°, Dn for the following reaction at 25.0 °C. Is the reaction spontaneous? 3 H2 (g) +…

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

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Q: Briefly describe the Third Law of Thermodynamics.   b) Consider the reaction 2X(g)+ O2(g)→3Y(g)…

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

Q: 2. SO2(g) + O2(g), AH°25°C = +99.2 kJ and AS°25°C = +93.94 J/K. Is the reaction spontaneous at 25°C?…

A: The question is based on the concept of spontaneity of the reaction. if Gibbs free energy change of…

Q: Is the formation of acid rain spontaneous or non-spontaneous at 50°C?

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Q: Calculate the standard free-energy change (ΔGo) at 25°C for the reaction H2(g)+O2(g) ⇌ H2O2(l)

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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: .) Which of the following processes are spontaneous and which are nonspontaneous: (a) the ripening…

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Q: Given the following reaction: 2NO(g) + Cl2(g) 2NOCl(g) DHorxn = -75.5kJ 1. Is the reaction…

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Q: Consider these two reactions: Reaction 1: 20F2(g) O2(g) + 2 F2(g) ΔΗ-49.4 k Reaction 2: N2(8) +…

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Q: Consider the following reaction at constant P. Use the information here to determine the value of ΔS…

A: the reaction is said to be spontaneous when ΔG° is negative.  It ΔG° is positive, the reaction is…

Q: The combination that always gives a spontaneous process is __. a) +ΔH                       +ΔS b)…

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Q: Consider the decomposition of dinitrogen tetroxide, N2O4, into nitrogen dioxide, NO2.  N2O4…

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A: For a spontaneous process, the entropy of a system is less than the entropy of surroundings.

Q: Calculate ΔSsurr at 25°C for the following reaction at constant pressure. Will the reaction be…

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