A reaction is found to have a change in enthalpy of -8.67 kJ/mol and a change in entropy of 29.87 J/mol. The reaction is: Spontaneous at all T O Spontaneous at low T and nonspontaneous at high T O Cannot be determined with the information given. Spontaneous at high T and nonspontaneous at low T O Nonspontaneous at all T

Q: Consider these two reactions: Reaction 1: 20F₂(g) → O₂(g) + 2 F₂ (g) AH = -49.4 kJ Reaction 2: N₂(g)…

A: ★ Answer : Reaction 2  is non spontaneous. ★ Explanation :

Q: Use the standard free energy data to determine the free energy change for the following reactions,…

A: Answer:- This question is answered by using the simple concept of calculation of Gibbs free energy…

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

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Q: Is each statement true or false? If false, correct it.(a) All spontaneous reactions occur…

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

Q: Photochemical smog is formed through a sequence of reactions, the first of which is N2(g) + O2(g) ⟶…

A: For a reaction to be spontaneous ,    should be negative Hence  value of should be greater than ,

Q: The thermal decomposition of molten sodium chloride into elemental gaseous sodium and elemental…

A: The thermal decomposition of molten sodium chloride into elemental gaseous sodium and elemental…

Q: 6. At a constant pressure the following reaction is exothermic: 2 NOe) → N;Oe)- Which of the…

A: 2 NO2(g) ---> N2O4(g) This Reaction is exothermic (at constant pressure ). The reaction is…

Q: 1. N2(g}+3H2(g) --->2NH3(g) If AH = -92.2kJ and AS= -0.1987KJ/K, what is AG for the reaction at…

A: The free energy change,ΔG can be calculated using the formula: ΔG = ΔH - TΔS ΔH = enthalpy change ΔS…

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

A: Entropy: Entropy determines spontaneity of process. Spontaneity means perform a process in a given…

Q: Consider the reaction:            H2S(g)  +  SO2(g)   -->   3S(g)  +  2H2O(l) for which ΔH is -233…

A: GIVEN:            H2S(g)  +  SO2(g)   -->   3S(g)  +  2H2O(l) ΔH =-233 kJ  ΔS = -424 J/K

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: Which of these processes is spontaneous?a. the combustion of natural gasb. the extraction of iron…

A: The spontaneous process can take place without having energy from the external source. In these…

Q: If a chemical reaction has a positive AH and a negative AS, then A) it will be spontaneous at all…

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Q: For the process, CO 2 (s) -> CO 2 (g), this process (and explain why) A. is always spontaneous B. is…

A: For any process to be spontaneous, the free energy change must be negative.delta G = delta H - T…

Q: 17. For the reaction: A + B → C AH°= +300 kJ/mol and AS° = +200 J/K.mol. At what temperature will…

A: Given, ∆H° = 300kJ/mol ∆S° = 200J/K.mol

Q: Directions: Calculate AG°, AH°, AS° then predict whether the reaction is spontaneous. 1. Consider…

A: The given reaction is N2 (g) + 3H2 (g) → 2NH3(g);  ΔH = - 92.4 kJ/mol Given data the absolute…

Q: Which of the following are spontaneous processes? a. Silverwares tarnish when exposed to air b. A…

A: Spontaneous processes = These are the process which occur without any external force.   a.…

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: Which of the following processes are spontaneous?   air escaping a balloon   combustion of natural…

A: Here we consider the differences between two types of changes in a system, those that occur…

Q: Calculate the free energy change for the following reaction at 25°C. Is the reaction spontaneous at…

A: Given: ΔHrxn = −1269.8 kJ ΔSrxn=−364.6 J/K T = 25°C = 298 K

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: If a chemical reaction has a negative AH and a positive AS, then A) it will be spontaneous at all…

A: The spontaneity of the reaction is determined from the sign of change in free energy (∆G). If ∆G…

Q: The standard enthalpy change and standard entropy change for the reaction are: A,HP = -666.2 kJ…

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

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

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Q: 1. For the reaction C₂H6 (g) → C₂H4 (g) + H₂ (g) AH° is + 137 kJ/mol and AS° is + 120 J/K mol. Which…

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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: For the reaction below ∆G° = + 33.0 kJ, ∆H° = + 92.2 kJ, and ∆S° = + 198.7 J/K. Estimate the…

A: We wil use the Gibbs helmholtz equation to calculate the temperature when ∆G is zero. And above this…

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: Which of the following phase changes is not spontaneous at room temperature? Assume only the first…

A: Correct answer is (D) H₂O(g) → H₂O(s) At room temperature steam cannot convert into solid phase, so…

Q: Our atmosphere is composed primarily of nitrogen and oxygen, which coexist at 25 °C without reacting…

A: The relation between Gibbs free energy and equilibrium constant is shown below: ∆G0 = -RTln Kp…

Q: Determine if this reaction is spontaneous under standard conditions; knowing that the reaction's…

A: Spontanity of reaction is determined in terms of Gibbs energy formula.

Q: From the values of ΔH and ΔS, predict which of the following reactions would be spontaneous at 25°C:…

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

Q: For the reaction C2H6 (g) → C2H4 (g) + H2 (g), ∆Ho is + 137 kJ/mol and ∆So is 120J/mol.K. This…

A: The relation between entropy change, enthalpy change and free energy change can be shown from the…

Q: (a) Is the reaction spontaneous at 25°C? (b) The solid decomposed to NO2 and O2 at 25°C. Is the…

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Q: The standard enthalpy change and standard entropy change for the reaction are AH =-660 2 kJ mol"'…

A: As per our guidelines we can only solve first question. Please resubmit other questions as next…

Q: For a particular reaction, AH° = 20.1 kJ/mol and AS° = 45.9 J/(mol·K). Assuming these values change…

A: Answer:- This question is answered by using the simple concept of spontaneity of the reaction which…

Q: The standard enthalpy change and standard entropy change for the reaction are: AHP = -1036.0 kJ mol1…

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Q: 17. For the reaction: A + B C AH°= +45 kJ/mol and AS° = +60 J/K.mol. At what temperature will this…

A: For the reaction: A + B  →C ∆H°= +45 kJ/mol ∆S° = +60 J/K.mol.  For a spontanseous reaction ∆G°<0…

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: For a particular chemical reaction, ΔH = 4.3 kJ and ΔS = –19 J/K. Under what temperature condition…

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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,…

A: Given that:  T = 25°C = 25°C + 273 = 298K  dHrxn = 29.8KJ/mol

Q: From the following ∆H and ∆S values, predict whether the reaction would be spontaneous. If not, at…

A: Spontaneity of reaction is predict as following Reaction will be spontaneous if ∆G<0 Reaction…

Q: At what temperature will a reaction become spontaneous given: Entropy change = 170 J/K enthalpy…

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Q: A reaction has values ΔS = 72.3 J K mol-1 and ΔH = 47.0 kJ mol-1. At what temperature (in °C) will…

A: Solution: We know ΔG=ΔH−TΔS if ΔG<0, process is spontaneous if ΔG>0, process is non…

Q: Under what conditions is N2 O3(g) ⟶ NO(g) + NO2(g) spontaneous?

A: to calculate spontaneity of reaction we have the formula ∆G°298 =∆H-T∆S° where, ∆H= change in…

Q: For a nonspontaneous reaction , AS° = 189 J/K, and AH° = 76.3 KJ. At what temperature this reaction…

A: ∆G° = ∆H° - T∆S°  ∆G°<0 for spontaneous reactions

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: Which of the following is spontaneous at SATP?

A: CaCO3(s)+178 kJ→CaO(s)+CO2(g)  B option is spontaneous reaction at STP.  In the above reaction ∆S is…

Q: Methanol, CH3OH , is formed from methane and water in a two‑step process. Step 1:…

A: