For a given reaction, ΔH=69.3kJ/mol, and the reaction is spontaneous at temperatures above the crossover temperature, 464K. The value of ΔS= _______ J/mol⋅K, assuming that ΔH and ΔS do not vary with temperature. A. 149 B. 6700 C. 3.22×10^4 D. −6700 E.−149

Q: For a given reaction, ΔS = +112 J/mol ⋅ K, and the reaction is spontaneous at temperatures above the…

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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+ ---> Cu + Sn4+ Increasing…

Q: The decomposition of magnesium carbonate is shown M9CO3(s) → MgO(s) + CO2(g) AHO = 101 kJ-mol-1 and…

A: MgCO3(s) ......> MgO(s) + CO2(g)  dH° = 101KJ/mol dS° = 175JK-1mol-1 For spontaneous…

Q: One mole of an ideal gas undergoes the cycle, A⟶B⟶C⟶A, as shown in the graph. For this gas, CV =…

A: First law of Thermodynamics; ∆U=q+Wq = ∆U-W The process A→B is an isobaric process, constant…

Q: The melting point of benzene is 5.5 °C. Predict the signs of ΔH, ΔS, and ΔG (in terms of the system…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…

Q: Consider the reaction A → B with ΔS° = 75.580 J/(K·molrxn). What should be the ΔS° in J/(K·molrxn)…

A: If the coefficient of the substances are multiplied or divided by some number then the value of ∆S…

Q: Choose spontaneos or non spontaneous reactions/process ✓ A waterfall runs uphill ✓ Water freezes…

A: In thermodynamics, a spontaneous process is one that occurs naturally under certain conditions. It…

Q: For the conversion of reactant A to product B, the change in enthalpy is 7.80 kJ·mol-1 and the…

A: Solution: ∆H= 7.80 KJ mol-1∆S= 44.4 JK-1

Q: Now calculate the change in entropy (delta S) for the following reaction, using the thermodynamic…

A: Entropy is defined as the measurement of the randomness of the system. It is a state function that…

Q: For a given reaction AHO = 347 kJ and ASO = 155 J/K. At what tempereature will the reaction become…

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Q: One mole of an ideal gas undergoes the cycle, A⟶B⟶C⟶A, as shown in the graph. For this gas, CV =…

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Q: The molar entropies of methane and carbon dioxide at 25°C are 186.6 and 213.8 J/mol·K, respectively.…

A: The molar entropy in terms of microstates can be expressed as,…

Q: The decomposition of hydrogen peroxide, H2O2, to gaseous O2 and water is a spontaneous process, yet…

A: The decomposition of hydrogen peroxide, H2O2, to gaseous O2 and water is a spontaneous process, yet…

Q: A student calculated that for a given reaction, ∆S = 22J/K and ∆H =6028 Joules. At which temperature…

A: The relation between Gibbs free energy, enthalpy and entropy with temperature is  ∆G = ∆H - T∆S  If…

Q: Consider the reaction: N204(g) 2 NO2(g). What is AS° at 25 °C? AHP, kJ mol-1 AGf, kJ mol-1 NO2 33.85…

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Q: In which is there a positive entropy change? A. Magnesium combusts in air to form Magnesium oxide B.…

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Q: Consider the reaction: 2 NO( g) + O2( g)-------->2 NO2( g)Estimate ΔG° for this reaction at each…

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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: concerning S and  ΔS

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Q: Consider the reaction: 2 A (s) + 10.4 kJ ------ 2 B (s) + 3 C (g), at what temperature(s) would you…

A: For any reaction to be spontaneous, its Gibbs energy must be negative i.e below 0. Here, the…

Q: Determine the lowest temperature (in "C) at which a certain reaction starts to become spontaneous…

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Q: Which of the following temperatures will result in a spontaneous reaction if the ΔH°rxn = –3.24…

A: As we know , ∆G° = ∆H° - T∆S° For spontaneous reaction ∆G° should be negative. ∆G° < 0 ∆H° - T∆S°…

Q: For a chemical reaction to be spontaneous only at low temperatures, which of the following…

A: For any reaction to be spontaneous, the value of ΔGo i.e DGo of the reaction should be -ve. Hence…

Q: What is standard free energy change for the formation of NO(g) from N2  and O2 at 298K given that…

A: Standard free energy change for a reaction is the energy released or absorbed when reactants…

Q: For the reaction CaCO3(s) → CaO(s) + CO2(g)       ΔHo = -17.8 kJ  and ΔSo = -161 J/K,  at standard…

A: Enthalpy change of a chemical reaction is used to measure the amount of heat energy released or…

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: spontaneous

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Q: A 1.0 B 0.5 22.4 44.8 Volume (L) Pressure (atm)

A: From A→BThe process from A→B is isobaric since process is constantFor isobaric process entropy…

Q: Dissolution of Ammonium Nitrate mass of water: 200 g   initial temperature of water: 20°C final…

A: Dissolution of ammonium nitrate in water is endothermic reaction. It absorbs heat from the system

Q: 10. Iron(III) oxide can be reduced by carbon monoxide. Fe₂O3(s) + 3CO(g) 2Fe(s) + 3CO₂(g)Use the…

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Q: Draw a structural formula for the major organic product of the reaction shown. + HCI

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Q: For the reaction CaCO3(s) → CaO(s) + CO2(g)       ΔHo = -17.8 kJ  and ΔSo = -161 J/K,  at standard…

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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: A reaction has and enthalpy change of reaction value of – 37.6 kJ and an entropy change of reaction…

A: A reaction is spontaneous when change in  Gibbs Free energy is negative. Here, ∆H is negative =…

Q: c. 273 °C 8. For a given reaction, AH = +7.50 kJ/mol and AS = +70.74 J/(K mol). Above what…

A: In thermodynamics, a reaction is said to be spontaneous if it occurs without being driven by some…

Q: Consider the following reaction in which acetic acid decomposes to form methane and carbon dioxide:…

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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: 68. Consider the reaction: CaCO3(s) → Cao (s) + CO₂ (g) Estimate AG° for this reaction at each…

A: Standard thermodynamics values of the given substances at 25oC are:

Q: iling point of meth

A: Gibbs free energy is a thermodynamic concept which helps to calculate the maximum of reversible work…

Q: If ΔH and ΔS for a reaction are both negative which of the following is true.   Select one: a. It…

A: We know that ΔG =ΔH - TΔS WHERE ΔG= Gibbs Free Energy ΔH= Enthalpy ΔS = Entropy T= Temperature For…

Q: Which of the following statements given is/are FALSE? I. A system at constant temperature cannot…

A: The correct option is:

Q: Which one of the following reactions will have a positive ∆S? A. CO2 (g) → CO2 (s) B. 2 Hg (l) + O2…

A: We know that Entropy is directly proportional to randomness and we also know that randomness is…