What should be the sign of EMF for the reaction to be considered spontaneous? Why?

Q: If enthalpy is +220 kJ for a reaction and entropy is +120 J, at what temperature is this…

A: The spontaniety of any reaction is decided by the Gibb's free energy change if the reaction. Any…

Q: [1] Given: CH,(g) + H2O(g) CO(g) + 3H2(g). AH° for the reaction is +206.1 kJ/mol, while AS° is +215…

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Q: Copper Metal is obtained by smelting copper(I) sulfide ores: Cu2S(s) + O2(g) → 2 Cu(s) + SO2(g) Use…

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Q: For a certain reaction at 15°C, ∆H = −10.5 kJ/mol and ∆S = 30. J/mol•K. Calculate ∆G for the…

A: ∆G is the change in gibbs free energy. The value of ∆G is given by following expression :  ∆G = ∆H -…

Q: A particular reaction is spontaneous at 450 K. The enthalpy change for the reaction is +34.5 kJ.…

A: Given : Enthalpy change of reaction, ΔH = +34.5 KJ = 34500 J…

Q: Explain the difference between a spontaneous and non-spontaneous process, and provide an example of…

A: Difference between spontaneous and non-spontaneous process :

Q: What is the standard free-energy change ΔG° at 25°C for the following reaction? See the Supplemental…

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Q: Calculate ΔG° for a reaction for which ΔH° = 24.6 kJ andΔS ° = 132 J/K at 298 K. Is the reaction…

A: Given, ΔH° = 24.6 kJ ΔS ° = 132 J/K

Q: Determine if the following reaction is spontaneous at 298K BaCO3(s) ↔ BaO(s) + CO2(g) ΔHf˚ =…

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Q: Write equations for the oxidation of Fe and of Al. Use ∆Gofto determine whether either process is…

A: Oxidation is loss of electrons while reduction is gain of electrons and they always occur together.…

Q: Describe how entropy and enthalpy combine for the overall determination of spontaneity. What values…

A: The Gibbs equation, shown in equation (1) where ΔH is the enthalpy change, ΔS is the entropy change,…

Q: For a particular reaction, ∆H = -32 kJ and ∆S = -98 J>K. Assume that ∆H and ∆S do not vary with…

A: a. Given : ΔH = -32 kJ  ΔS = -90 J/K 1) To calculate Temperature at which  ΔG=0  ΔG = ΔH  - TΔS ΔG=0…

Q: For the following reaction, AH° for the reaction is -206.1 kJ/mol, while AS° is -215 J/K•mol . NO…

A: For the reaction to be spontaneous , we have to see the  value of Gibbs free energy. ∆G = negative (…

Q: In a particular spontaneous process, the number of microstates availableto the system decreases.…

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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: [1] Given: CH«(g) + H2O(g) – CO(g) + 3H2(g). AH° for the reaction is +206.1 kJ/mol, while AS° is…

A: 1. Given :  CH4(g) + H2O(g) → CO(g) + 3H2(g)  ∆H° = +206.1 kJ/mol  ∆S° = +215 J/K.mol  T = 25°C  To…

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

A: The given reaction is,

Q: Calculate ΔG° for a reaction for which ΔH°= 20 kJ and ΔS° = 140 J/K at 298 K. Is the reaction…

A: Given  ΔH°= 20 kJ  1 kJ =1000 J ΔH°= 20,000 J ΔS° = 140 J/K T = 298 K  ΔG° = To be determined

Q: What are the signs of ΔH, ΔS, and ΔG for the spontaneous condensation of a vapor to a liquid?…

A: The reactions that occur on their own and do not need any external help for the reaction to take…

Q: Consider the following reaction at room temperature:                         Co(s) + Fe2+(aq, 1.94…

A: The above Nernst equation could be simplified as, Ecell=E°cell-0.0592VnlogQ

Q: Which statement is true? All reactions for which DH <0 are spontaneous. O All reactions for which DS…

A: Correct answer is : All reactions for which ΔG &lt; 0 are spontaneous. Gibb's free energy change…

Q: For the reaction C2H6 (g) → C2H4 (g) + H2 (g) ΔH° is +137 kJ/mol and ΔS° is +120 J/K ∙ mol. This…

A: Given, The balanced chemical equation, C2H6 (g) → C2H4 (g) + H2 (g) ΔH°=+137 kJ = 137000 J, and ΔS°…

Q: Consider the following equation carefully, and determine the sign of AS for the reaction it…

A: 1) In this reaction, reactant is in solid state so it's entropy is less because less randomness in…

Q: 1. From the data in the Appendix of Open Stax, calculate AH°, AS°, and AG° for the following…

A: For a given reaction , ∆H° , ∆S° and ∆G° can be calculated using standard formation values of each…

Q: Consider the following reaction: CH3OH(g) --> HCHO(g) + H2(g); DHo = 85 kJ (2)…

A: As this reaction is endothermic in nature as Del H is positive

Q: A reaction will be spontaneous only at low temperatures if both ΔH and ΔS are negative. For a…

A: given: ∆H=-320.1KJ/mol        =-320100J/mol∆S=-95J/K.mol

Q: [1] Given: CH.(g) + H2O(g) CO(g) + 3H2(g). AH° for the reaction is +206.1 kJ/mol, while AS° is +215…

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Q: What is the standard free-energy change ΔG° at 25°C for the following reaction? See the Supplemental…

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Q: ΔG° for the reaction

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Q: Consider the reaction:  4 A (g) ------  2 B (s) +  3 C (g) + 20.5 kJ,    at what…

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Q: For a reaction in which ∆H = 76.2 kJ/mol and ∆S = 422 J/K mol, determine the temperature, in °C,…

A: We have the equation for Gibbs free energy as, ∆G = ∆H-T∆S Where, ∆G = change in Gibbs energy ∆H =…

Q: For the process O2(g)      2O(g), ΔH° = 498 kJ·mol –1.  What would be the predicted sign of ΔS°rxn…

A: Given that :Reaction = O2(g) → 2O(g) ∆H° = 498kJ/mol

Q: Can a process be spontaneous at one temperature and nonspontaneous at a different temperature?

A: Thermodynamics can be used to explain the spontaneity of a reaction.

Q: What are the signs of ΔH, ΔS, and ΔG for the spontaneous conversion of a crystalline solid into a…

A: Conversion of a crystalline solid into gas requires addition of energy.  A reaction that absorbs…

Q: Given the following data, calculate ΔGorxn to determine if the reaction Ti(s) + 2Cl2(g) -> TiCl4(l)…

A: Solution- Given data- ΔH of (TiCl4(s))=−804.2 kJ/mol and ΔH of(Cl2)=ΔH of (Ti(s))=0 kJ/mol.

Q: Use the appropriate symbol to represent a non-spontaneous process (>, <, =)  ∆G ________________ 0…

A: ∆G represents change in Gibbs free energy.∆E represents change in Internal energy .K represents…

Q: Calculate ∆G° for a reaction for which ∆H° = 24.6 kJ and ∆S° = 132 J/K at 298 K. Is the reaction…

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Q: Calculate AG and show that the reaction is spontaneous at 25°C. ΔG° kJ =

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Q: A particular reaction is spontaneous at 450 K. The enthalpy change for the reaction is +34.5 kJ.…

A: The spontaneous nature of the reaction is determined by calculating the change of free energy of the…

Q: For a particular reaction, ΔH = -32 kJ and ΔS = -98 J/K.Assume that ΔH and ΔS do not vary with…

A: Given data, ΔH = -32 k J  ΔS = -98 J/K. Assume that ΔH and ΔS do not vary with temperature. (a)…

Q: 9) For which set of values of AH and AS• will a reaction be non-spontaneous at 25°C? a) AH• = -10…

A: Multiple question

Q: In photosynthesis, plants form glucose (C6H12O6) and oxygen from carbon dioxide and water. Write a…

A: Photosynthesis It is a process in which green plants make their own food and convert light energy…

Q: 9. For the following reaction at 298 K, AS = -308.2 J/K and AH = -192.7 kJ: 4NO(g) N₂O(g) + N₂O₂(g)…

A: Given reaction is 4NO(g) → NO(g) + N₂O3(g) For this reaction at 298 K , ΔS= -308.2 J/K and = -0.3082…

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: What is entropy, and what is ΔS for a reaction, and what does it mean if ΔS is positive or negative?

A: Answer  The measurement of randomness is called entropy, entropy…

Q: For the process O2(g)      2O(g), ΔH° = 498 kJ·mol –1.  What would be the predicted sign of ΔS°rxn…

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Q: For a given reaction, ΔH∘∘= +35.5 kJ/mol and ΔS∘∘= +83.6 J/(K∙∙ mol). In what temperature range is…

A: From thermodyanamic relations, we have ΔGo = ΔHo - TΔSo      ------(1) For a reaction to be…

Q: 1. From the values of AH and AS, predict which of the following reactions would be spontaneous at…

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