MISSED THIS? Watch KCV: Determining the Enthalpy of Reaction from Standard Enthalpies of Formation, IWE: AH*rxn and the Standard Enthalpies of Formation: Read Section 7.9. You can click on the Review link to access the section in your e Text. Ethanol can be made from the fermentation of crops and has been used as a fuel additive to gasoline. Part A Enter a balanced equation for the combustion of ethanol. Express your answer as a chemical equation. Identify all of the phases in your answer Part B ΑΣΦ A chemical reaction does not occur for this question. ΔΗån = Request Answer ? Calculate AHin using values from Appendix IIB. Express your answer using five significant figures. IVE ΑΣΦ Request Answer www ? kJ

Q: What is the molecular formula of a cyclic alkane with 6 carbon atoms? C6H14 C6H10 C6H16 C6H12 соно

A: We would use general formula of cyclic alkane to determine the formula.

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Q: A student constructs the following standard electrochemical cell in a laboratory at 25.0 °C. Cis…

A: Given data :

Q: 4. Why can't tin (IV), copper (II), antimony (III) and bismuth (III) ions be separated from silver,…

A: In the given question we have, Cations - Cu2+ , Sn4+ , Bi3+ , Cd2+ and Sb3+ Hydrochloric acid = HCL…

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A: each of two isomers having one different configuration out of all several asymmetric carbon atoms…

Q: A hot 115.8115.8 g lump of an unknown substance initially at 181.3181.3 °C is placed in 35.0 mL of…

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Q: For parts b and c could you please explain why there is a cis isomer formed and how to know when…

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Q: :NH + Ph—C=C: FN + CH3CH₂COOH H e :N: + Ph-C=CH NH + CHỊCH,COO ・・・・ O-H 00-H H

A:

Q: Using the Bohr model, determine the wavelength when an electron in n = 3 is excited to n = 7.

A:

Q: Assume you mix 100.0 mL 0.200 M CsOH with 50.0 mL 0.400M HCI, the temperature of the combined…

A: The balanced equation is: HCI(aq) + CsOH(aq) → CsCI(aq) + H2O(l) Since all the coefficeints are 1,…

Q: Step 1 Add curved arrow(s) to draw step 1 of the mechanism. Modify the given drawing of the product…

A: Given reactants are as follows:

Q: MISSED THIS? Watch IWE: Stoichiometry Involving AH; Read Section 7.6. You can click on the Review…

A:

Q: The pH of a basic solution is 12.99. What is [H⁺]?

A: The value of [H+] is = 1.023 x 10-13 M

Q: When the following pairs of solutions are mixed, which produces the strongest electrolyte solution?…

A: Strongest electrolyte solution can be described on the basis of number of ions present in the…

Q: Predict the major product for the following electrocyclic reaction under two different conditions.…

A:

Q: Combining 0.287 mol Fe₂O3 with excess carbon produced 13.5 g Fe. Fe₂O3 + 3C What is the actual yield…

A:

Q: Determine the temperature of a reaction if K = 1.20 x 10⁻⁶ when ∆G° = +30.40 kJ/mol.

A: We have been given ∆G° = +30.40 kJ/mol and K = 1.20 x 10⁻⁶.We have been asked to calculate the…

Q: Brief discussion of column chromatographic separation (solvent polarity, elution of compounds etc.)

A: Column chromatography is an analytical technique used for the seperation of mixture of compounds…

Q: Macmillan Learning Phosphorous pentachloride decomposes according to the reaction PCI, (g) PC13(g) +…

A:

Q: What is the maximum concentration of Ag⁺ that can be added to a 0.00640 M solution of Na₂CO₃ before…

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Q: 2. The following questions are designed to help acquaint you with identifying and drawing…

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A: To draw a three dimensional representation of a isotactic polyvinyl bromide with a degree of…

Q: 1. Provide the products for each polymerization shown below. Provide end groups where applicable.

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Q: How many photons are produced in a laser pulse of 0.691 J at 677 nm? photons:

A: Given data :

Q: What is the pH of a solution that contains 1 part pyruvic acid and 4 parts pyruvate? The pka for…

A: Given: pKa of pyruvic acid = 2.50 Pyruvic acid = 1 part Pyruvate = 4 parts

Q: How about question 4?

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Q: Ans: 12. Convert the following Fischer projection into a wedge/dash drawing.

A: Given: structure of molecules

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Q: Riboflavin absorbs UV-visible light making the electrons in the molecule more energetic. As a…

A: This question can be answered using the concept of Jablonski diagram.

Q: Question 3 Write an equilibrium constant expression for the following heterogeneous equilibrium:…

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Q: Separating a mixture of equal parts benzoic acid, 2- naphthol and 1,4 - dimethoxybenzene. 1.…

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A: Question -2 Given -  n=3 E=?

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Q: 1.Name the following compounds: (a) [CoBr(NH3)5]SO4 (b)[Al(OH)4(H₂O)₂] (c)[RhCl₂(NH3)4]*…

A: Bis

Q: 1. Consider the unbalanced reaction: MnO2 + HCI MnCl2 + Cl2 + H₂O If 0.86 moles of MnO2 and 48.2…

A: we have to determine the reactant that is used up first and mass of Cl2 produced

Q: A radioactive element, A, with a mass of 212 and atomic number 84, emits an alpha particle and…

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A: Here we are required to find the amount of work done by the system

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Q: Question 13 The pH of a 1.0 M benzoic acid solution is 2.10 The % ionization in this situation is ✓…

A: Answer:- This question is answered by using the simple concept of calculation of percent ionization…

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Q: Which of the following accurately shows the curved arrows for an SN2 reaction? (A) (C) CI CI (B) (D)…

A: we have to select the option which shows the curved arrows correctly for SN2 reaction

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A: we need to the structure of the given compounds

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Q: ›Combining 0.357 mol Fe₂O3 with excess carbon produced 14.2 g Fe. Fe₂O3 + 3C2Fe + 3 CO What is the…

A:

Q: 6. Heat of Formation. Give the balanced chemical equation used to find the heat of formation of the…

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Q: For the reaction below, Kc = 1.10 × 10⁻⁴. Note Kc is sometimes called K. What is the equilibrium…

A: Kc = 1.10 × 10⁻⁴ Initial Concentration of A = 0.200 M Initial concentration of B = 0.900 M

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.