Consider the reaction X2( g)------->2 X( g). When a vessel initially containing 755 torr of X2 comes to equilibrium at 298 K, the equilibrium partial pressure of X is 103 torr. The same reaction is repeated with an initial partial pressure of 748 torr of X2 at 755 K; the equilibrium partial pressure of X is 532 torr. Find ΔH° for the reaction.

Q: Which of the following processes would be accompanied by a decrease in entropy? O H20(1, 50°C) –→…

A: given :-  H2O (l,50°C) →  H2O (l,75°C) H2O (s) →  H2O (l) H2O (g) →  H2O (s) H2O  (l) →  H2O (g) H2O…

Q: The oxidation of glucose (C6H12O6) in body tissue producesCO2 and H2O. In contrast, anaerobic…

A: All the given chemical reaction is shown below.

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Q: Sort the descriptions. Standard Gibbs free energy of reaction Gibbs free energy of reaction No…

A: The answer is as follows:

Q: At 25°C, a reaction undergoes an enthalpy change of −27.0 kJ mol^−1 and an entropy change of 27.0 J…

A: Enthalpy change (∆H) = -27.0 KJ mol-1 ...Or because 1KJ = 1000 J    .....so, -27.0 KJ mol-1 × (1000…

Q: Given the reaction: 3H2(g) + N2(g) ⇌ 2NH3(g) Calculate the Kp if Kc is 0.105 at 472°C. Use the…

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Q: Above what temperature does the following reaction become nonspontaneous? 2 H2S(g) +3 02(g) - 2…

A: Given, The balanced chemical equation is given below, 2H2O(g)+3O2(g)→2SO2(g)+2H2O(g) Then, ∆H=-1036…

Q: Consider this reaction occurring at 298 K:BaCO3(s)<----->BaO(s) + CO2( g)a. Show that the…

A: a. ΔG°rxn is +ve. therefore, the reaction is not spontaneous.

Q: For a reaction where AH° = +573 kJ/mol and AS° = +1.64 J/mol·K, at what temperature, in K, does X(I)…

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Q: Which of the following processes does NOT involve an increase in entropy? Melting of gold nuggets…

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A: Given: ΔH = -20.0 KJ/mol = -20000 J/mol. And ΔS = 34.0 J/K.

Q: The reaction A( g)<---->B( g) has an equilibrium constant of 5.8 and under certain conditions…

A: When the concentrations of both reactant and product becomes equal then, the reaction is said to be…

Q: If a particular reaction has   ΔrH = +30 kJ mol–1    and    ΔrS = –60 J K–1mol–1, when do you expect…

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Q: What is the difference between ΔS, ΔS°, and ΔS°298 for a chemical change?

A: In a chemical reaction, the reactants are changed to products. This involves the change in some…

Q: How many of the following processes are nonspontaneous? climbing stairs dissolving salt in water…

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Q: Enter your answer in the provided box. Water gas, a mixture of H2 and CO2, is a fuel made by…

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Q: standard entropy

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Q: What is the value of the equilibrium constant at 20°C for a reaction that has a standard free-…

A: The relationship between the ΔG0 and equilibrium constant is given by  RTln(K) = nFE0cell = -ΔG0…

Q: Which process will result in an increase in entropy: a.) 2NO2(g) ---> N2O4(g) b.) H₂O(l)---> H₂O(s)…

A: Since, Entropy is a thermodynamic quantity. It measure the randomness. If randomness is more then…

Q: In which of the following reactions do you expect to observe a decrease in entropy? A. N₂(g) + O₂ 2…

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Q: A box contains a gas composed of 12 atoms each corresponding to the different stable isotopes of Tin…

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Q: At 25 °C, the equilibrium partial pressures for the reaction 3 A(g) + 2 B(g) = C(g)+ 2 D(g) were…

A: The given chemical equilibrium reaction is as follows,3A(g)+2B(g)⇌C(g)+2D(g)Partial pressure of…

Q: Which of the following reactions is accompanied by a decrease in entropy? a) HCI(s) = H+(aq) +…

A: In this question, we will select the correct Reaction inwhich entropy Decreases.  You can see…

Q: (a) Use the data given below and calculate ∆Ho, ∆So, ∆Go, and Kp at 25° C for the reaction: 2 COCl2…

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Q: Which of the following reactions results in a decrease in entropy? CaCO3 (s) CaO (s) + CO2 (g) N2O4…

A: Unit temperature measurement of the thermal energy method  is not usable for practical application.…

Q: For the oxidation of iron to form iron(III) oxide: 4Fe(s) + 3O2(g) ⟷⟷ 2Fe2O3(s)…

A: ΔSo = –549.73 J∙K–1 T = 298K ΔH = –824.2 kJ∙mol–1 = -824200 Jmol-1

Q: At 25 °C, the equilibrium partial pressures for the reaction 3 A(g) + 4 B(g)=2C(g) + 3 D(g) were…

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A: Need to tell which among the following will lead to spontaneous forward reaction.

Q: Calculate the equilibrium constant at 25 degrees C for each of the following reactions from the…

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Q: Consider the chemical equation C(s) + 2A(g) S 2B(1) + heat. Be suré to JUSTIFY each answer below.…

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Q: Reactions between acids and bases (neutralization reactions) are exothermic. You have a solution of…

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A: Difference between the standard entropy of formation of product to the standard entropy of reactant…

Q: A) The reaction is reactant favored and non-spontaneous. B) The reaction is product favored and…

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Q: Consider the following reaction:           2HF(g)  H2(g) + F2(g)          (K = 1.00  10–2) Given…

A: Given:

Q: At 298 K, the formation of ammonia has a negative So osys . 2N2(g) + 3H2(g) → 2NH3(g) Soosys = -…

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Q: 8. Gaseous nitrosyl bromide, NOBr, is formed by the reaction 2NO(g) + Br,(g)2 2NOB1(g) At 25°C, the…

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Q: At what temperature, in K,  does X (l)-->X(g) occurr spontaneously? Delta H°=+573 kj/mol Delta…

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Q: Discuss the spontaneity of each process in the following scenarios, based on the use of the Gibbs…

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Q: For a certain chemical reaction, the standard Gibbs free energy of reaction at 30.0°C is 73.3 kJ.…

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Q: Calculate AH° for the reaction 2K (8) + 2H20(1) —> 2КОН(ад) + H- (9) Substance and State AH£°…

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Q: Consider the following reaction at 298 K:N2 O4(g) ⇌ 2NO2(g)              KP = 0.142What is the…

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Q: At 25 ∘C25 ∘C, the equilibrium partial pressures for the reaction   3A(g)+4B(g)↽−−⇀2C(g)+3D(g)…

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Q: 10. Use the data: AGº (CO) = -137.2 kJ, AGº (C) = 0 kJ, AGº (O₂) = 0 kJ, to find K at 298 K for the…

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Q: Below

A: Here, you can see both values of ∆H and ∆S are positive so if temperature is low then Reaction is…

Q: Which of the following reactions or changes is accompanied by a decrease in entropy (ΔS < 0)?…

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Q: Which one of the following processes produces a decrease in the entropy of the system? precipitation…

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Q: The following reaction is known to have a very large equilibrium constant. 4 NH3(g) + 5 O2(g) 4…

A: