Calculate enthalpy change for N2H4  (g) + 2F2 (g) arrow N2. (g) + 4 HF (g)

Q: 2. For which of the following is the enthalpy of the reaction the same as the enthalpy of formation?…

A: The standard enthalpy of formation is the reaction enthalpy when the formation of one mole of a…

Q: According to the following reaction, what is the change in enthalpy (kJ) per mole of O2(g) produced?…

A: This reaction can be described as hydrolysis of Hydrogen cynide, which produces ammonia, methane and…

Q: Determine the enthalpy of reaction for 2CH₄(g) C₂H₄(g) + 2H₂(g) using the equations: 2C₂H₂(g) +…

A: Hess's Law of Constant Heat Summation (or just Hess's Law) states that regardless of the multiple…

Q: Equation A: 1/2 N2 (g) = 1/2 O2 (g) = NO (g) H=90.3 Equation B: 2 NOCl (g) = N2 (g) + O2 (g) + Cl2…

A: Since, The standard enthalpy of the formation is defined as change of enthalpy of 1 mol of the…

Q: According to the following reaction, what is the change in enthalpy (kJ) per mole of O2(g)? Do not…

A: Applying basic concept of change in enthalpy as per chemical reaction.

Q: Carbon disulfide is a colorless liquid. When pure, it is nearly odorless, but the commercial product…

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Q: C2H4 (g) + H2O (l) → C2H5OH (l) ΔH=? 1.C2H5OH (l) + 3O2 (g) → 2CO2 (g) + 3H2O (l) ΔH = -1367,5 KJ…

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Q: C 2H 5OH() + 30 2( g)→ 2CO 2( g) + 3H 20( ) AH=-1.37 x 10 3 kJ I. The reaction is endothermic II.…

A: Exothermic reaction is the reaction in which energy is released in the formation of products while…

Q: According to the following reaction, what is the change in enthalpy (kJ) per mole of O2(g) produced?…

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Q: Given reactions A- C, determine the the change in enthalpy (kJ) for the reaction between C3H8(g) +…

A: Given (A) 3Cs+4H2g→C3H8g        ∆H=-104.7 KJ(B) Cs+O2g→CO2g               ∆H=-393.51 KJ(C) H2g+1/2…

Q: Consider the following reaction: C(s, graphite) + 2H2O(l) → CO2(g) + 2H2(g), AHrxn = ? Given the…

A: Given that, the reaction is:

Q: 4. For which of the following reactions would the enthalpy of reaction be labelled AH,º? NO(g)…

A: The standard enthalpy of formation ∆H°f is defined as the amount of heat is absorbed or evolved…

Q: Calculate the enthalpy change for the following reaction. 4 CHCl3 (l) + 5 O2 (g) ➞ 4 CO2 (g) + 2…

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Q: Using the following standard molar enthalpies of formation: AH₁° XeF₂(g) = -108 kJ/mol; AH XeF4(s) =…

A: XeF2(g) + F2(g) -----> XeF4(s)Enthalpy change for this reaction (∆H°rxn) = ?Standard molar…

Q: For a particular isomer of C,H18, the combustion reaction produces 5113.3 kJ of heat per mole of…

A: The reaction given is Standard enthalpies of formation of some species are  1) ΔHof (CO2(g)) =…

Q: 1) Compute the enthalpy change for the reaction below using heats of formation from the text or an…

A: Given, Note: standard enthalpy of all the species taken from standard books.

Q: 2. Which one of the following equations is enthalpy of reaction equal to enthalpy of formation for…

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Q: A student performed the procedure described in the lab manual using 49.9 mL of 1.0 M HCI and 49.3 mL…

A: Molarity of HCl = 1.0 MVolume of HCl: 49.9 mLMolarity of NaOH = 1.0 MVolume of NaOH = 49.3 mLInitial…

Q: Consider the reaction of chlorine with water vapor, H₂O(g) to form hydrogen chloride and oxygen: 1/2…

A: Enthalpy change of a reaction is a state function. If we reverse a chemical reaction than the sign…

Q: Determine the enthalpy of reaction for 2CH4(g) → C₂H4(g) + 2H₂(g) using the equations: 2C₂H6(g)…

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Q: Acetic acid, CH3 CO₂H, is made industrially by the reaction of methanol and carbon monoxide.…

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Q: Using Enthalpies of formation provided on the exam determine the change in enthalpy (kJ/mol) for the…

A: Given reaction is : CH4 (g) + 2O2 (g) ⟶ CO2 (g) + 2H2O (l)  Enthalpy of reaction = ΔH = ?

Q: Given the following data, calculate the enthalpy change for the formation of 60 g of heptane, C7H16.…

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Q: Q4) Hydrogen peroxide, H,0,, is a colorless liquid whose solutions are used as a bleach and an…

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Q: For each of the following reactions: (1) Calculate the enthalpy change for the reaction using…

A: The standard enthalpy of formation or standard heat of formation of a compound is the change of…

Q: Using Enthalplies of formation determine the change in enthalpy (kJ/mol) for the following reaction.…

A: Determine enthalpy of formation of the given reaction = ?

Q: Carbon disulfide is a colorless liquid. When pure, it is nearly odorless, but the commercial product…

A: Standard enthalpy change is calculated by looking at change in enthalpy of product and reactant

Q: Given the following reactions, what is the overall enthalpy change for the following reaction? N H…

A: The reaction considered is, NH3 (g) + HCl (g) →NH4Cl (s)

Q: AH = 66.4 kJ AH = -114.2 kJ N₂(g) +202(g) → 2NO2(g) 2NO(g) + O₂(g) → 2NO₂(g) + - the enthalpy of the…

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Q: Calculate the enthalpy change (in kJ/mol) for the combustion of CS2 (1) using the enthalpy values…

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Q: 3. Given the following information, calculate AHxn for SiO{s) + 4HF(g) → SiF«(g) + 2H2O(1) 1. AH; of…

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Q: Consider the following two reactions and the corresponding enthalpy changes: CH4(g) +2 O2(g)→…

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Q: What is the enthalpy change when 4.70 grams of HF(g) (molar mass= 20.0 g/mol) are formed by the…

A: The given reaction is,

Q: Look at the image.

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Q: Pentane is a good fuel that burns well in oxygen. C5H12(1) + 802(g) → 5CO2(g) + 6H2O(1) Calculate…

A: Formula used :-  ∆Hrxn = ∆Hproduct - ∆Hreactant

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.