Use the data shown below, to calculate AH°rxn and ASᵒrxn at 25°C for the following reaction: 3 H₂(g) + Fe₂O₂ (s) → 2 Fe(s) + 3 H₂O(g) What is the value of AGᵒrxn at 25°C? Substance: AHO (kJ-mol-¹) H₂(g) 0 So (J.K-¹-mol-¹) 130.7 Fe₂O3(s) -824.2 87.40 Fe(s) 0 27.28 H₂O(g) -241.8 188.8

Q: Consider the reaction shown below and the tabulated thermochemical data at 298 K. Which of the…

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Q: [7] Use the thermochemical equations provided below to determine AHn° at 25 °C for the following…

A: d*2, we have :  4B(s) + 6H2(g) = 2B2H6(g) ∆H = 72 kJ/mol  ....(1)  a*2 and applying…

Q: Given the information below, calculate the value of AH¢° for Agl (s) is: AgI(s) + ½B12(g) → AgBr(s)…

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Q: 1. For the given reaction: Calculate AG at this temperature = 298.15 K 4Fe(s) + 302 (g) → 2Fe₂O3(s)…

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

Q: Consider the balanced reaction 3 A + 7 B → 3 C + 7 D and the absolute entropies provided in the…

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Q: Use Hess's law to calculate ΔGorxn using the following information. CO(g) -----> C(s) + 1/2 O2(g)…

A: Please find your solution below : Hess's law of constant heat summation states that heat absorbed or…

Q: Use the data given in the table to calculate the value of Δ?∘rxn at 25∘ C for the reaction described…

A: Since in qu you have mentioned  Δ?∘rxn. So I'm assuming it to be ΔH0rxn  Since for any reaction…

Q: For a particular reaction at 187.3 °C, AG = -989.95 kJ, and AS = 662.97 J/K. Calculate AG for this…

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Q: Calculate the ÄE°rxn for the decomposition of calcium carbonate to calcium oxide and carbon dioxide.…

A: Given data : Required equation: Caco3(s) -------> CaO(s) + CO2(g)  ∆H° = ?

Q: Calculate AH°rxn for the following reaction using the values in the Table below. Enter in kJ SiO₂…

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Q: Given that AH°; for HCl(g) is -92.3 kJ/mol, calculate the AH°; in kJ/mol for FeCl2 (s).

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Q: 12. Use the standard reaction enthalpies given below to determine AH°rxn for the following reaction:…

A: The value of ∆H depends on Stoichiometry of the chemical reaction If a chemical equation is…

Q: 4. Using the thermodynamic information at 25.0°C provided answer the questions below. 2Al(s) +…

A: Dear student ,   since you have posted multiple parts questions we will allow to solve only first…

Q: Consider the following reaction at 25 °C: 3 Ni(s) + N,(g) + 3 H,0(g) → 3 NiO(s) + 2 NH,(g) Given the…

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Q: For the following reaction at 25 °C, AHO = -250.7 kJ mol-1 and ASO = 121.1 J K-1 mol-1. Calculate…

A: We have,   ∆G° = ∆H°- T∆S° ∆S° = 121.1J/K.mol = 0.1211kJ/K.mol ∆H° = -250.7kJ/mol T = 273.15+25 =…

Q: Theoretically, one can obtain zinc from an ore containing zinc sulfide, ZnS, by the reaction ZnS(s)…

A: Answer :-  a) ∆H° = 206.0 (kJ) b) ∆S° = 15.7 (J/K)  c) ∆G° = 201.3 (kJ)  d) Since, ∆H°, ∆S° and ∆G°…

Q: 5.) Above what temperature does the following reaction become nonspontaneous? (hint: use: ΔG-ΔΗ-…

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

Q: Calculate A,G for the following reaction: - CaCO,(s) → Ca0(s) + CO,(9) Using the following data: -…

A: Given reaction,     CaCO3(s) → CaO(s) + CO2(g)

Q: The U.S. requires automobile fuels to contain a renewable component. The fermentation of glucose…

A: for the reaction to be spontaneous, ∆G° must be -ve The given balanced chemical equation is  C6H12O6…

Q: The addition of 121  g potassium fluoride to 591  mL of water (d = 1.00 g/mL) causes the temperature…

A: The mass of solution is calculated as shown,

Q: Use the standard reaction enthalpies given below to determine AH°rxn for the following reaction:…

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Q: Qualitatively predict the sign (positive or negative) for AS sys and AS surr for each reaction.…

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Q: Calculate ASuniy for the following reaction at 25 °C: 2C2H6(g) + 7 O2(g) 2 4CO2(g) + 6 H20({) ΔΗ…

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Q: For a particular reaction at 196.8 °C, AG = -1266.45 kJ, and AS = 529.15 J/K. Calculate AG for this…

A: ∆G = ∆H - T∆S

Q: The reusable booster rockets of the space shuttle use a mixture of aluminum and ammonium perchlorate…

A: The change in enthalpy of a reaction is calculated by using the following formula

Q: 6. Calculate AG for the combustion of propane. C3H8(g) + 50₂(g) → 3CO₂(g) + 4H₂O(g) C3H8(g) -24.5…

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Q: 2. Nitric oxide reacts with chlorine to form NOCI: 2NO(g) + Cl2(g) → 2NOCI(g) What is AG°xn for this…

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Q: 2. Balance each equation, predict the sign of ASºn if pessible, and calculate its value at 25°C: (a)…

A: Interpretation: We have to balance and predict the entropy value for the given reactions.

Q: item#1c] *refer to the photo below*

A: To find  the standard Gibbs free energy change of the reaction in kJ at 298 K and have to tell the…

Q: Chemists have been performing experiments with the newly discovered element X to determine its…

A: The reaction given is   And ΔHo for the reaction = -191 KJ Given : Under standard conditions, X is…

Q: Calculate AG for the following reaction at 25 °C: rxn 4CO₂(g) + 2H₂O(1) 2C₂H₂(g) +50₂ (8) Round your…

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Q: We have discussed several methods for calculating AHorn based on tabulated data. One of these was…

A: To solve this problem we have to use the given thermochemical equation.

Q: Determine AS° for 2 03(g) → 3 02(g). Substance S° (J/mol·K) Оз (9) 239 О2 (9) 205

A: Degree of disorder in a particular system is termed as entropy. Given: Entropy of O3 (g) = 239…

Q: Hydrogen reacts with nitrogen to form ammonia (NH3) according to the reaction 3H2(g) + N2(g) -->…

A: Given: ∆Ho = -92.38 kJ/mol ∆So = -198.2 J/mol K Temperature (T) = 250°C

Q: Calculate the ÄE°yn for the decomposition of calcium carbonate to calcium oxide and carbon dioxide.…

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Q: For a particular reaction at 156.2 °C, AG = -994.28 kJ, and AS = 781.63 J/K. Calculate AG for this…

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Q: Calculate AH°and AE° for the following reactions at 25 °C. Use standard enthalpies of formation from…

A: Calculate ∆H° and ∆E° of the given reaction-  2C2H2(g) + 5O2(g) ----> 4CO2(g) + 2H2O(g)

Q: 6. Photosynthesis can be represented by the equation 6CO:(g) + 6H,O(1I) = CH1,O6(s) + 60;(g) a)…

A: Entropy is the degree to measure the randomness of an element. The change in entropy of a reaction…

Q: 8. Given the following data, what is the value of AH°t (in kJ) for the following reaction? 2 H2O20)…

A: Since ΔH0f for O2 = 0 And ΔH0f for any reaction is given by  ΔH0f  = ΔH0f (products) - ΔH0f…

Q: For a particular reaction at 140.6 °C, AG = 560.53 kJ/mol, and AS = 131.79 J/(mol · K). Calculate AG…

A: It is based on chemical thermodynamics concept. we have to calculate Gibbs free energy change for…

Q: 9. Use the standard reaction enthalpies given below to determine AH°rxn for the following reaction…

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Q: Calculate the AHrxn for this overall reaction: 2 H3BO3(aq) → B203(s) + 3 H20) given the following…

A: Given: 2H3BO3(aq)→B2O3( s)+3H2O(l) To find: ∆Hrxn

Q: Consider the following reaction at 25 °C: 3 Ni(s) + N,(g) + 3 H,O(g) → 3 NiO(s) + 2 NH,(g) Given the…

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Q: 6) Calculate AS rxn for the following reactionat 298 K. The Sº for each species is shown below the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The vaporization of ethanol CH,OH() → CH;OH(g) at its normal boiling point, 351 K, has AS = 110. J/K…

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Q: 1. Calculate the DH for the reaction 2 Al + Fe2O3 ® 2 Fe + Al2O3 Using the following information:…

A: Given, 2Al + 3/2 O2 ---> Al2O3, ∆H = -1670 kJ................(i) 2Fe + 3/2 O2 ---> Fe2O3, ∆H =…

Q: Given the following information at 25°C, calculate AG" at 25°C for the reaction 2A(9) + B(9) → 3C()…

A: ∆G° = ∆H° - T∆S°were,∆G° =standard gibb's free energy ∆H° = standard enthalpy T = temperature∆S° =…

Q: Calculate AG at 298 K for the reaction below if 1.45 moles IBr gas is formed in the reaction. 12(g)…

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Q: For which one of the following processes occurring at constant temperature is AS,ys positive? O A)…

A: Generally, increase in umber of moles on product side results in higher value of entropy of the…

Q: Calculate the AHrxn for the reaction, Sn (s) + Cl2 (g) - SNC12 (s) AHrxn = ? Sn (s) + Cl2 (g) Sn (s)…

A: The enthalpy of a reaction can be determined by Hess's law. According to Hess law, the change in…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.