Given the standard enthalpy changes for the following two reactions: (1) N2(g) + O2(g) →2NO(g) AH° = 181.8 kJ (2) N2(g) + 202(g)2NO2(g) AH° = 66.4 kJ what is the standard enthalpy change for the reaction: (3) 2NO(g) + O2(g) 2NO2(g) ΔΗ kJ

Q: Given the standard enthalpy changes for the following two reactions: (1) N2(g) + 202(g) N204(g) AH°…

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Q: Given the standard enthalpy changes for the following two reactions (1) 4C(s) + 5H2(g) C4H10(g) AH°…

A: we know according to the hess's law the enthalpy change for the reaction is the sum of the overall…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) +…

A: The 2 reactions given are (1) 4C(s) + 5H2(g) ------> C4H10(g)...... ΔH° = -125.6 kJ(2) C2H2(g)…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Ni(s) + O2(g)–→2N¡O(s) AH°…

A: According to Hess's law change of enthalpy in a chemical reaction is same regardless of whether the…

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

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Q: What is the enthalpy change for producing 1.00 kg of acetic acid by this reaction?

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

A: According to Hess's law, the enthalpy change of the final reaction can be calculated by adding the…

Q: Determine the enthalpy change for the reaction below, given the following reactions and subsequent…

A: Interpretation -  To determine the enthalpy change for the reaction which is given as -       2 C…

Q: The standard enthalpy change for the following reaction is 270 kJ at 298 K. 2 HNO3(g) N2(g) + H2(g)…

A: Heat of formation of HNO3 = -135KJ/mol

Q: 2. The hydrogenation of coal is a method of producing methane by the following reaction: Ca + 2H2@)…

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Q: Use standard enthalpies of formation, AH;, to calculate the AH?xn for 2 NO(g) + 2 H, (g) → N, (g) +…

A: Answer: Formula to calculate enthalpy of reaction from the enthalpy of formation is shown below:…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) +…

A: • The required thermochemical equation is,  2C2H4(g)+ H2(g) → C4H10(g) ; ∆H° = ?    • The given…

Q: (c) The heat released by the reaction (d) If the acid-base neutralization produces 0.43 mole of…

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Q: Given the standard enthalpy changes for the following two reactions: (1) N2(g) +…

A: We are provided with N2(g) + 2O2(g) → N2O4(g)...............(1) 2N2O(g) → 2N2(g) +…

Q: Methanol is known to be the simplest alcohol, and is used as an antifreeze agent, a solvent, a fuel…

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Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H2(g) C,H10(9) AH°…

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Q: Given the standard enthalpy changes for the following two reactions: (1) N2(g) +…

A: The reactions given are 1) N2 (g) + 2 O2 (g) -----> N2O4 (g)…

Q: For the chemical reaction H2 (g) + F2 (g) →2 HF (g) AH° = -79.2 kJ/mol. What is the enthalpy for the…

A: The enthalpy of a reaction is dependant on the stoichiometric coefficients of reactants and products…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H2(g)→C4H10(g) AH°…

A: According to Hess's law change of enthalpy in a chemical reaction is same regardless of whether the…

Q: A scientist measures the standard enthalpy change for the following reaction to be -577.0 kJ:…

A: We have given that  H2CO(g) +O2(g)  →  CO2(g)  + H2O(l)                                   ∆Hrxn =…

Q: Given the equation for a hypothetical reaction, 5A + 3B > 7C + 3D, and the following standard…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: For the chemical reaction H2 (g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol. What is the enthalpy for…

A: Heat of formation, also called standard heat of formation, enthalpy of formation, or standard…

Q: When 0.560 g of Na(s) reacts with excess F2(g) to form NaF(s), 13.8 kJ of heat is evolved at…

A: The solution of above question is-

Q: 2. The industrial method currently used to produce butanol is the hydration of butene. C,Ha(g) +…

A: Given  4C(s)  +  4 H2(g)   →  C4H8(g)                                           ∆H = -7.1 KJ/mol…

Q: What is the standard enthalpy change for the reaction:3NO2(g) + H2 O(l) ⟶ 2HNO3(aq) + NO(g)…

A: The standard enthalpy of formation is called the heat of formation or the standard heat of…

Q: Calculate the enthalpy of the following reaction: 2Mg + O̟ → 2M9O Given: Mg + 2HCI – M9CII, + H, MgO…

A: Hess's Law states that the total enthalpy of a chemical reaction is the sum of the enthalpy changes…

Q: The standard enthalpy changes of combustion of glucose and ethanol are given as -2820 and -1368 kJ…

A: The balanced chemical equation for the combustion of glucose is,6C6H12O6(s) + 6O2(g) → 6CO2(g) +…

Q: Hydrobromic acid (HBr) is a commonly used acid for adding bromine to organic compounds. As bromine…

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Q: What is the standard enthalpy change for the combustion of 3.50 mol of methanol? 2CH 3OH(l) + 3O 2 →…

A: Standard enthalpy of combustion of methanol is -715 kJ/mole

Q: For the chemical reaction Ca (s) + ½ O, (g) → CaO (s) AH° = -635 kJ/mol. What is the enthalpy for…

A: The given reaction is, 2CaO(s) ---> 2Ca(s) + O2(g)   The chemical reaction given is,  1) Ca(s) +…

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

A: the solution is as follows:

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) +…

A:

Q: The standard enthalpy change for the following reaction is -576 kJ at 298 K. 2 Na(s) + I2(s) –→ 2…

A: Given,

Q: Determine ΔH in kJ/mol for the following reaction: 2NO(g) + O2(g) --> 2NO2(g) The standard…

A: Given that:  2NO(g) + O2(g) <......> 2NO2(g)  dH°NO = 90.4 KJ/mol  dH°NO2 = 33.9 KJ/mol

Q: Calculate the standard enthalpy of reaction for the reaction 2Na + 2H2O——> 2NaOH+ H2. Standard…

A: The reaction is given below.

Q: For the chemical reaction H2 (g) + F2 (g) – 2 HF (g) AH° = -79.2 kJ/mol. %3D What is the enthalpy…

A: The given enthalpy of the reaction is -79.2 kJ/mol for the reaction: H2 (g) + F2 (g) → 2HF (g)

Q: For the chemical reaction Ca (s) + ½ O₂ (g) → CaO (s) ∆H° = -635 kJ/mol. What is the enthalpy for…

A: Ca (s) + ½ O₂ (g) → CaO (s) ∆H1°  .............................(1) 2 CaO (s) → 2 Ca (s) + O₂ (g)…

Q: the following two reactions: (1) N2(g) + 2O2(g) -> 2NO2(g)...... ΔH° = 66.4 kJ (2) 2N2O(g) ->…

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Q: Given H2(g) + (1/2)02(g)H20(1), AH° = -286 kJ/mol, determine the standard enthalpy change for the…

A: Given data H2(g)+12O2(g)→H2O(l)  ,  ∆H°=-286 KJ/mol To be determine  2 H2O(l)→2 H2(g)+O2(g) , ∆H°=?

Q: Given the standard enthalpy changes for the following two reactions: (1) 2C(s) + 2H2(g) C2H4(g) AH°…

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Q: For the chemical reaction H2 (g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol. What is the molar enthalpy…

A:

Q: For the chemical reaction Ca (s) + 02 (g)→CAO (s) AH° = -635 kJ/mol. What is the enthalpy for the…

A: Given reaction,      Ca(s) + 1/2 O2(g) → CaO(s)       ∆H0 = - 635 kJ/mol

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) +…

A: In these types of question, we have to arrange the given two equations, in such a way that it…

Q: Calculate the standard enthalpy change for the reaction 2C8H18() + 1702(g) 16CO(g) + 18H20(). Given…

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Q: What is the standard enthalpy change for the reaction? 2NH3(g)→N2H4(1) + H2(g) AH°1 = -543 kJ-mol-1…

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Q: 1 If the standard enthalpy of cembustion of gaseous cyclopropane, C3H6, is -2091.2 kJ mol- at 25 C,…

A: The negative enthalpy of formation means the formation of the compound is spontaneous. The enthalpy…

Q: Given the standard enthalpy changes for the following two reactions: (1) Sn(s) + Cl½(g}→SnCl½(s) AH°…

A: Enthalpy (H) is a state function. Hess's Law of constant heat summation: If a chemical reaction…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H₂(9) C4H10(g) AH°…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

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

A:

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.