Question 30 of 37 Calculate the enthalpy of combustion (kJ/mol) of ethyl stearate (C20H4002), an important component of many biodiesel fuels made from soybean oil and ethanol, given the following standard enthalpies of formation: CO2(g) = -393.5 kJ/mol H2O(1) = -285.8 kJ/mol C20H40O2(1) = -984.6 kJ/mol

Q: Calculate the enthalpy of combustion (kJ/mol) of cetane (C₁₆H₃₄), an analogous component in diesel…

A: Standard enthalpy of formation:CO₂(g) = -393.5 kJ/molH₂O(l) = -285.8 kJ/molC₁₆H₃₄(s) = -458.3 kJ/mol

Q: The enthalpy of formation for H2O(g), CO2(g), and C2H5OH(l), in kJ/mol, are given as follows:…

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Q: Using the given data, calculate the enthalpy of reaction. N2O(g) + NO2(g) --> 3NO(g)     ΔH°f…

A: Data

Q: Calculate the enthalpy of the reaction 4B(s) + 302(g)→2B2O3(s) given the following pertinent…

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Q: A scientist measures the standard enthalpy change for the following reaction to be -976.0 kJ:…

A: Answer :-  The standard enthalpy of formation of H2O(g) = -253.5 kJ/mol.…

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

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Q: For a particular isomer of C8H18, the combustion reaction produces 5093.7 kJ of heat per mole of…

A: Given  Enthalpy  of reaction  is -5093.7 Kj/mole  Calculation  of Enthalpy  of isomer of C8H18.

Q: A scientist measures the standard enthalpy change for the following reaction to be -1054.0…

A: For H2S: ΔH∘f=−20.63 kJ/mol For O2: ΔH∘f=0 kJ/mol For H2O:ΔH∘f=−285.8 kJ/mol

Q: Determine the enthalpy (in kJ/mol) or the reaction C(s) + 2 SrO(s) → CO2 (g) + 2 Sr(s).

A: Given  two enthalpies for two reactions are -1184 and 384 KJ/mol We have to determine enthalpy for…

Q: 3) Use the standard reaction enthalpies given below to determine AHD rxn reaction 2 NO(g) + O2(g) →…

A: Concept of Hess' law:It states that the change of enthalpy in a chemical reaction  is not dependent…

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: 02(g)→2N2 (9) + 6H20(9), AH = py change to burn 24.6 g of ammonia?

A: Given, Mass of NH3 = 24.6 g  Molar mass of NH3 = 17 g/mol Moles = mass/molar mass   = 24.6/17 = 1.45…

Q: A scientist measures the standard enthalpy change for the following reaction to be -896.4 kJ:…

A: Given : a reaction And ∆H° = -896.4 KJ

Q: Given the following information for benzene, C6H6 (at 1 atm), calculate the amount of heat in kJ…

A: Latent heat of vaporization is the amount of energy required to convert 1 mole of a substance in the…

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

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

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Q: Determine the enthalpy change, ΔHrxn, for the combustion reaction shown, using the heats of…

A: Thermodynamics is the branch of chemistry that mainly deals with the heat transfer between system…

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: Methane combustion provides a significant fraction of the world's primary energy, and is used for…

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Q: A scientist measures the standard enthalpy change for the following reaction to be 80.1 kJ:…

A: Solution- ∆Hreaction=2∆HofFe2O4+∆Hof(H2O)- 3∆HofFe2O4+∆Hof(H2)∆Hreaction=2∆HofFe2O4+(-241.818kJ)-…

Q: Which of the below reactions corresponds with that which represents the standard enthalpy of…

A: Combustion takes place in presence of oxygen.Combustion is an exothermic.Hydrocarbons on complete…

Q: Many grill lighter contain liquid butane, C4H10. Using the given data, calculate the enthalpy of…

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Q: Given the following thermochemical equation: 4NH3(g) + 502(g) Calculate the enthalpy change when…

A: Ammonia reacts with oxygen to form nitrogen oxide and water. The equation for the balanced chemical…

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: 5. In question 1, you calculated the enthalpy change for the combustion of propane from combining 3…

A: The objective of the question is to calculate the standard enthalpy change for the combustion of…

Q: Tetrachloromethane, CC14, is formed from methane and chlorine in the following reaction: CH4 (g) + 4…

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Q: enthalpy change for

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Q: Using the standard enthalpies of formation provided, calculate the energy change for the combustion…

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Q: Sucrose (table sugar, C12H22O11) can be oxidized to CO2 and H2O, and the enthalpy change for the…

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Q: Calculate the enthalpy of formation of propan-1-ol, C3H¬OH(I), given the following data. AcH…

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

Q: You wish to find the enthalpy for the reaction 6 Gel4 (s) + 14 NH41 (s) → 3 Ge₂H6 (1) + 7 N₂ (g) +…

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Q: A scientist measures the standard enthalpy change for the following reaction to be -56.0 kJ:…

A: Formation enthalpy of the reactants and products (except water)  is collected from internet,since…

Q: A scientist measures the standard enthalpy change for the following reaction to be -891.8 kJ :…

A: A) ΔHrxn= (Hf )products - (Hf )reactants   Hf NH3 = -45.90 kJ/mol (2mol) Hf N2O = x kJ/mol (3mol) Hf…

Q: Using standard heats of formation, calculate the standard enthalpy change for the following…

A: We know ∆H0rxn = (∆H0F)product - (∆HoF)reactant

Q: Determine the change in enthalpy (kJ/mol) for the following reaction. Use significant figures…

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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.