If ΔH and ΔS for a reaction are both negative which of the following is true.   Select one: a. It is spontaneous at low temperatures ( The magnitude of TΔS < Δ H) b. It is not spontaneous at any temperature. c. It is spontaneous at high temperatures ( The magnitude of TΔS  > Δ H) d. It is spontaneous at all temperatures. e. It will always be spontaneous in the reverse direction when TΔS and Δ H are negative

Q: If a reaction has a ΔH of 188.0 kJ/mole and is spontaneous for all temperatures greater than  49.9…

A: For spontaneous reaction, the value of Gibbs free energy must be negative.

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

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Q: if the process is never spontaneous

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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: When a thermodynamics process occurs and there is no change in pressure, ∆P = 0, this process is…

A: The different processes given in the option are defined as A) Adiabatic : This are those processes…

Q: What temperature does the following reaction become non spontaneous? 2 H2S (g) + 3 O2(g) —> 2…

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Q: n 2*(aq, 1.0 M), Sn 4*(aq, 1.0 M) || Cu 2*(a . Increasing the size of the cathode. - Increasing the…

A: 1) from the cell notation    Overall cell reaction,  Sn2+ + Cu2+ ---&gt; Cu + Sn4+ Increasing…

Q: Find ΔS for the system, surroundings, and universe when 28.2 g of liquid H2O is evapourated at 100.0…

A: Thermodynamics is a branch of chemistry that deals with the flow of heat energy. There are two…

Q: 8. Assuming AS° and AH° do not vary with temperature, at what temperature will the reaction shown…

A: The solution is as follows :

Q: For each reaction, calculate AHrn, ASn, and AGxn at 25 °C and state whether or not the reaction is…

A: a. The reaction: N₂O₄(g) → 2 NO₂(g) Standard enthalpies of formation: N₂O₄(g): Hf =…

Q: For the reaction 2 C4H10 (g) + 13 O2 (g) → 8 CO2 (g) + 10 H2O (g) AH° is-125 kJ/mol and AS is +253…

A: The change in Gibbs free energy for a reaction depends upon the change in enthalpy and the change in…

Q: 1. Calculate the value of ΔSo for the oxidation of solid elemental sulfur to gaseous sulfur…

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Q: For each reaction, calculate ΔH °rxn, ΔS°rxn, and ΔG°rxn at 25 °C and state whether or not the…

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

Q: The third law of thermodynamics states that __________. A. ∆H°rxn = ∑n∆H°f (products) - ∑m∆H°f…

A: Entropy: "It is the measure of randomness of molecules of a closed system. It is denoted as 'S'."

Q: 11. Which is true for this process? solid gas D add heat AS (+) A. It is spontaneous at all…

A: For reaction to be spontaneous we need to check ∆G is negative or positive.If it comes out to be…

Q: At what temperatures will the following processes be spontaneous? (Enter NONE if the process is…

A: The relationship between ∆G , ∆H , ∆S and temperature is given by  ∆G = ∆H - T∆S  If ∆G = 0,…

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

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Q: Which of the reactions are spontaneous (favorable)? Choose ALL that apply. OA. NH3(g) + HCI(g) →…

A: For any chemical reaction or chemical change, if the Gibbs free energy change i.e. ∆G of the…

Q: . Find AH, AS, and AG. Is this reaction exothermic and is it spontaneous? NO (g) + ½ 02 (g) -> NO2…

A: ∆H° and ∆S° can be calculated from the given standard values of each products and reactants. And…

Q: Identify whether the following process is spontaneous or nonspontaneous. Explain your answer.…

A: Given process, Dissolving table salt in boiling water. Melting ice at 25.0°C.

Q: Calculate ΔG for the following reaction at 350 K if the partial pressure of nitrogen is 33.0 atm,…

A: First, we need to calculate the standard Gibbs free energy of the reaction that can be calculated…

Q: Which of the following processes will have a ΔH value with a negative sign?     A. The boiling…

A: Acid base reaction is exothermic.

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

A: H° = +42.8 kJ = 42800 J S° = +331.5 J/K?

Q: Calculate the temperature at which the reaction changes from a spontaneous to non-spontaneous…

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Q: For the reaction: CCl4(g) → C(s) + 2 Cl2(g)      ΔH∘ = +95.7 kJ  and ΔS∘ = +142.2 J/K The reaction…

A: Relationship between free energy, change in enthalpy, change in entropy given as ΔG = ΔH–TΔS Where T…

Q: Consider the reaction between nitrogen and oxygen gas to form dinitrogen monoxide. 2 N2(g) + O2(g)…

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Q: 2. For a particular chemical reaction AH = 5.5 kJ and AS = -25 J/K Under what temperature condition…

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Q: Calculate the ∆Suni and determine whether the following reaction is spontaneous or nonspontaneous at…

A: Calculate the ΔH and the ΔS for the system   2N2H4(g) + 2NO2(g)→3N2(g) + 4H2O(l)and then ΔSuniv =…

Q: 57. For each reaction, calculate AHan, AS, and AGan at 25 °C and state whether or not the reaction…

A: Note - Since you have asked multiple questions (multiple reactions), we are supposed to solve only…

Q: 5. Which of the following statements accurately describes the spontaneity of the reaction below?…

A: Given :-  The given reaction is            Al2O3(s) + 2Fe(s) → 2Al(s) + Fe2O3(s) ∆H°rxn = 830.8…

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: S(s)+O2(g)⇄SO2(g), is -300.4 kJ. Which statement below is true? a. This reaction is non-spontaneous…

A: B option is correct. If ∆G is negative that means reaction is spontaneous.ΔG cannot tell us anything…

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

A:

Q: 64. For each reaction, calculate AHxn, ASixn, and AGxn at 25 °C and state whether or not the…

A: To solve this problem, we will first need to find the standard enthalpy change (H°​rxn), standard…

Q: The following reaction takes place at 120°C: H 2O( l) →H 2O( g)     Δ H = 44.0 kJ/mol   Δ S = 0.119…

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Q: Consider the following reaction: 2 AB2 (g) ⟶ 2 AB(g) + B2(g)           ΔHo= +480.0 kJ/mol a.) Do…

A: Given Chemical Reaction is -  2 AB2 (g) ⟶ 2 AB(g) + B2(g)           ΔH° = +480.0 kJ/mol  Here the…

Q: Which equation represents the second law of thermodynamics? A. ΔS univ > 0 B. ΔS sys > 0 C. (Δ S…

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Q: Sodium carbonate can be made by heating sodium bicarbonate: 2NaHCO3(s) → Na2CO3(s) + CO₂(g) + H₂O(g)…

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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…