(2) Using the bond dissociation energies given below, calculate the ΔΗ' for the following reaction. Show...
1a. Using bond dissociation energies, calculate the heat of reaction (ΔH) for the reaction shown below. Show all your work and provide a reference for where you got your bond dissociation energy values. 1b. Is this reaction endothermic or exothermic? Explain. Provide energy diagrams showing the two processes. Circle the one that corresponds to this reaction. Label the axis appropriately as well as the activation energy (Ea). la. Using bond dissociation energies, calculate the heat of reaction (AH) for the...
7. Calculate the AHRxn for the following transformation. A table of bond dissociation energies is provided below. All work must be shown for partial credit. (8 pts.) hv Br + Br-Br + HBr: Table of Selected Homolytic Bond Dissociation Energies. Bond Broken (CH3)3C-H (CH3)2CH-H Br-Br H-Br CH3CH2-H (CH3)3C-Br (CH3)2CH-Br CH3CH2-Br kJ/mol 400 413 193 366 421 292 298 295
Alkane halogenation is a two-step reaction, as shown below. Using the table of bond dissociation energies, calculate the enthalpy of each step and the enthalpy of the overall reaction. Bond Dissociation Energies (for A-B rightarrow A middot + middot B)
Calculate the enthalpy of the reaction below using the given bond energies. Cl2 + Br2 → 2 BrCI Bond Energy (kJ/mol) CI-CI 242 Br-Br 193 Br-CI 218 0 -267 kj 217 kJ 0-1 kj 653 kJ
H2C=CH2 + CI H2C=CH + HCI Use the table of bond dissociation energies above to calculate AH for this reaction, the first step in the free radical chlorination of ethene. Table of Bond Dissociation Enthalpies Bond BDE (kJ/mol) H2C=CH-H 464 H-I 297 H-Br 368 H-C1 431 H-F 568 ΔΗ: kJ/mol This reaction is:
8.10 Explain the value of bond dissociation energies and use bond dissociation energies in calculations 1. Explain how bond dissociation energies are used to determine the enthalpy change in a reaction. 2. Understand the limitations of using average bond dissociation energy values. 3. Calculate reaction enthalpies from bond dissociation energies
Write equations for the chain propagation steps for the following reaction CH4 Br2CH3Br + HBr 2B. Use the bond dissociation enthalpy data in the given table to calculate ΔΗ"for the reaction of methane with a bromine atom (radical). KJ/mol 439 CH3-H 193 Br-Br H-Br 366 The activation energy for this reaction is 76 kJ/mol. Sketch a potential energy diagram for it, labeling reactants, product, and the transition state. 2D. Draw the structure of the transition state Does the transition state...
Calculate the enthalpy for the reaction below using the following bond dissociation energies. • H-H 436 kJ/mol O-H 460 kJ/mol 0-0 180 kJ/mol • 0=0 498 kJ/mol H -774 kJ/mol -654 kJ/mol 654 kJ/mol 774 kJ/mol
Calculate AH for the following reaction using the given bond dissociation energies. >co,g)+2H,0(g) AH° (kJ/mol) CHg)20,g) Bond 142 О-О Н-О 459 С-Н 411 799 O O 498 С-О 358 Number ΔΗ. kJ/ mol This reaction is endothermic exothermic
2. Consider the reaction below and answer the questions that follow. You can ignore stereochemistry in this problem: 16 points. Brzor Br hy a. Complete the two propagation steps for the reaction by filling in 'curved arrows' (that show the making/breaking of bonds) and the structures of A-C. (8 points) (2) Br: b. Using the bond dissociation enthalpies (BDEs) given below, calculate AH (in kcal mol') for each propagation step as well as for the overall reaction. Show your work....