3. Calculate the enthalpy for this reaction: 3NO2(g) + H2O(E) --> 2HNO3(aq) + NO(g) given the following thermochemical equations: AH° =- 116 kJ + 4HNO3(ag) AH°, = - 256 kJ AH° = 183 kJ 2NO2(9) 2NO(9) + O2(9) + 502(9) + 2H2Oq) 2NO (9) %3D N29) + O2(g) *

Q: Calculate the enthalpy for this reaction: 2C(s) + H2(g) ---> C2H2(g)AH° = ??? kJ Given the following…

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Q: For the reaction HCI(g) + NH3(g) NHẠCI(s) AG° = -90.0 kJ and AS° =-284.8 J/K at 302 K and 1 atm.…

A: Given reaction; HCl(g) +  NH3 (g)  ----->  NH4Cl(s)  and, ∆G° = -90.0 KJ and ∆S°  = -284.8 J/K at…

Q: For the reaction I2(g) + Cl2(g) – 2 ICI(g) AG° = -30.3 kJ and AS° = 11.4 J/K at 310 K and 1 atm.…

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Q: 1. Determine the change in enthalpy for the following reaction: N2Ha(1) + 2H2O2(1) → N2(g) + 4H2O(I)…

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Q: Given the standard enthalpy changes for the following two reactions (1) 4C(s) + 5H2(g)–C,H10(g) AH°…

A: If the given reaction is multiplied by 2 by two, then value of the given standard enthalpy change…

Q: [Review Topics] [References] Use the References to access important values if needed for this…

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Q: Given the reactions, X(s) + 0,(g) → XO(s) AH = -765.9 kJ XCO,(s) → XO(s) + CO,(g) AH = +112.9 kJ…

A: The reactions given are 1) 2)

Q: Given: 4AICI3(s) + 302(g) → 2Al,03(s) + 6C12(g); AH =- 529.0 kJ determine AH for the following…

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Q: 14. Given the following equations and AH° values given below, determine the heat of reaction at 298…

A: Given, a) 2H2(g) + O2(g) ➝ 2H2O(l)  ∆H° = -571.6 kJ b) N2O5(g) + H2O(l) ➝ 2HNO3(l) ∆H° = -73.7 kJ c)…

Q: What is the standard enthalpy change for the reaction? 2NH3(g) ----* NzH4(1) + Hz(g) (A) -935…

A: What is the standard enthalpy change for the reaction?

Q: The standard enthalpies of combustion at 25°C of hydrogen gas, H2(g), n-butane – C4H10(g),  1-butene…

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Q: Determine

A: We will calculate ∆H rxn by doing operation in giving equation

Q: Calculate the enthalpy for this reaction: 2C(s) + H2(g) ---> C2H2(g) AH° = ??? k.J %3D Given the…

A: Enthalpy of a reaction = Heat of combustion of products - Heat of combustion of reactants Enthalpy…

Q: lculate the enthalpy for this reaction to the nearest whole number 2C(s) + H₂(g) ---> C₂H₂(g) AH° =…

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Q: Given the reactions, X(s) + 0,(g) → XO(s) AH = -797.5 kJ XCO, (s) XO(s) + CO,(g) AH = +179.5 kJ what…

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Q: Using the AH; for SO3(g) and SO2lg) calculate AH° for the following reaction: SO SO2(g) +1/202(g)…

A: Calculate enthalpy of the given reaction---

Q: Suppose we have measured values of AH for these two reactions: C(s) + O2(g) → CO2(g) 2 CO(g) + O2(g)…

A: The 2 reactions given are 1)  C (s) + O2 (g) ------> CO2 (g)…

Q: The standard enthalpy change for the following reaction is -1.55×103 kJ at 298 K. 2 Fe(s) + 10…

A: Standard enthalpy change for the given chemical reaction

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) +…

A: This problem can be solved using Hesse's law of constant heat summation.

Q: Given the reactions, X(s) + 0,(g) XO(s) AH = -590.1 kJ XCO3(s) XO(s) + CO,(g) AH = +237.5 kJ what is…

A: Enthalpy of the reaction is the energy change when a reactant combines to form a product. According…

Q: Given that H,(g) + F,(g) – 2 HF(g) → 2 HF(g) AHom = -546.6 kJ 2 H,(g) + 0,(8) 2 H,O(1) AHm = -571.6…

A: In-order to find the enthalpy change of the desired reaction, the given reactions has to be written.

Q: N2(g) +3 H2(g) 2 NH3(g) AG° = -28.0 kJ and AS° = -198.7 J/K at 323 K and 1 atm. This reaction is…

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Q: For the reaction 2 CO(g) + O2(g) –2 CO2(g) AG° = -522.4 kJ and AS° = -173.1 J/K at 252 K and 1 atm.…

A: ∆G is negative reaction will go in forward direction or product side You are given a relation and…

Q: Given the following enthalpy change values for the reactions below: A + B → 2C ; ΔrH = 305.5 kJ…

A: According to the Hess's law we know that  when  a chemical equation is written as the sum of overall…

Q: Calculate the standard molar enthalpy of formation of NO(g) (in KJ) from the following data:…

A: Molar enthalpy of formation is defined as the enthalpy of formation of 1 mole of product in its…

Q: 1. From the following enthalpy changes, S (s) + 3/2 O₂ (g) → SO3(g) 2 SO₂ (g) + O₂(g) → 2 SO3 (g)…

A: Hess's law states that if a process can be expressed as the sum of two or more steps, the enthalpy…

Q: In the recovery of iron from iron ore, the reduction of the ore is actually accomplished by…

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Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + 02(g)→2P60(s) AH°…

A: We have to calculate the standard enthalpy change for the reaction PbO(s) + Zn(s) → Pb(s) + ZnO(s).

Q: Given the following thermochemical data at 25°C and 1 atm pressure, 3/2 02(g) + 2B(s) = -1264 kJ; -…

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Q: Calculate the standard enthalpy change for the reaction 2 Al (s) + Fe2O3 (s)  2 Fe (s) + Al2O3 (s)…

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Q: etermine the enthalpy for the reaction shown below. CS2(l)  +  3O2(g)  -->  CO2(g)  +  2SO2(g)…

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Q: 2. Calculate the AH for the reaction S 2(g) using these two reactions: + Oe So, AH = -296.8 kJ 2(g)…

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Q: Given the heat of formation of the following compounds from their elemer AH°F = -393.5 kJ/mol CO:(g)…

A: The question is based on concept of chemical thermodynamics. We have to calculate enthalpy change…

Q: Given the following data: AH = -285.8 kJ H2(9) + 2/(g) → H2O) AH = -76.6 kJ N2OS(g) + H20w → 2…

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Q: Given the standard enthalpy changes for the following two reactions: (1) 2Zn(s) + O2(g) → 2ZnO(s)…

A: Enthalpy change for a reaction is the amount that is evolved or absorbed by a reaction at different…

Q: Determine the enthalpy for the reaction shown below. CS2(l)  +  3O2(g)  -->  CO2(g)  +  2SO2(g)…

A: In this question, we have to find out the correct answer of given problem by the help of…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Fe(s) + 02(g)→2Fe0(s) AH°…

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Q: Given the standard enthalpy changes for the following two reactions: (1) 2Hg(l)+O2(g) 2HBO(s) AH°…

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Q: Calculate the enthalpy, AH for this reaction in kJ, given the data below to ONE DECIMAL PLACE. DO…

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Q: THERMODYNAMICS: Calculate the value of AH (in kJ) for the reaction, 2AR3 (g) + Q (s) → A2R4 (g) +…

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Q: Consider the two reactions. 2 NH, (g) + 3 N,O(g) → 4 N,(g) + 3 H,O(1) 4 NH, (g) + 3 0,(g) 2 N, (g) +…

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Q: Given the reactions, X(s) + 0,(g) → XO(s) AH = -527.1 kJ XCO,() - → XO(s) + CO,(g) AH = +261.3 kJ…

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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.