Use the given bond energy values to estimate ΔH for the following gas-phase reaction.   (Simple energy units required for the answer.)   D-values in kJ/mol DH-H = 432    DH-Br = 363    DH-C = 413 DH-N = 391    DH-O = 467    DC-C = 347 DC=C = 614    DC≡C = 839    DC-N = 305 DC=N = 615    DC≡N = 891    DC-O = 358 DC=O = 745    DC=O (CO2) = 799    DC≡O=1072 DC-Br = 276    DN-N = 160.    DN=N = 418 DN≡N = 941    DO-O = 146    DO=O = 495 DN-O = 201    DN=O = 607    DBr-Br = 193 DC-Cl = 339    DH-Cl = 427    DCl-Cl = 239

Q: Calculate the equilibrium constant (KP) for the following reaction at 25°C:

A:

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A: The ratio of energy to the molar mass is known as energy density.

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Q: Given the following bond energies (BE):             Bond                BE (kJ/mol)…

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Q: Using the bond energies below, estimate ΔH (in ) for the reaction C2H4(g) + 3O2(g) → 2CO2(g) +…

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

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Q: Identify the correct dipole for the C-O bond in the Lewis structure of acetone shown using the…

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Q: 8) Label the energy states in the diagram below (options are 1s4d, 1s3d, 1s3s). You will need to…

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Q: 2AF(g)+ 0,(g)→ A,0(g) + F0(g) 2AF,(g)+20,(g)→ Cl,0(g) +3F,0(g) 2F,(g) + 0,(9)-2F,0(g) AH = 167.4kJ…

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Q: For the following bond energies: CC triple bond - 839 KJ/mol, CC single bond - 348 KJ/mol, HI single…

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Q: Compute for the enthalpy (kJ/mol) of the reaction indicated below given the bond energies. C2H4 +…

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Q: Acrylonitrile, an important starting material for the manufacture of plastics and synthetic rubber,…

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Q: Calculate the carbon-carbon double bond energy from the following information: H H. H H- -H- На + AH…

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Q: Use the molar bond enthalpy data in the table to estimate the value of AHxn for the equation NH, (g)…

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Q: Using the provided bond energies, estimate the AHrxn for the generic reaction below. The skeletal…

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A: Ans given below

Q: [Review Topics] [References] The complete combustion of acetylene, C₂H₂ (g), produces 1300. k) of…

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A:

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A:

Q: 2 H₂O Bond Bond total bond energy for the reactants in the energy (kJ/mol) Average Bond Energies…

A: The reaction :  C2H4  + 3O2   →2CO2 +2H2O  H2-C=C-H2  +3O=O →2O=C=O +2 H-O-H

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.