If you look in the tables of bond enthalpies in a textbook (or most other places)...
Using the bond enthalpies in
the Average Bond Enthalpies table, determine the approximate
enthalpy (in kJ) for each of the following reactions. (Assume the
average bond enthalpy of the Cl–F bond is 254 kJ/mol.) (a) Cl2(g) +
3 F2(g) → 2 ClF3(g) (b) H2C=CH2(g) + H2(g) → H3CCH3(g) (c) 2
CH3(C=O)H(g) + 5 O2(g) → 4 CO2(g) + 4 H2O(g)
ITITIT Average Bond Enthalpies AH bond (kJ/mol) bond AHond (kJ/mol) bond AH bond (kJ/mol) bond bond AH bond (kJ/mol) С-Н...
Using the bond enthalpies in the Average Bond Enthalpies table, determine the approximate enthalpy (in kJ) for each of the following reactions. (Assume the average bond enthalpy of the CI-F bond is 254 kJ/mol.) (a) C12(g) + 3 F2(9) ► 2 CIF3(9) -817 kJ (b) H_C=CHCH2(g) + H2(9) ► H,CCH, CH3(9) 476x kJ (c) CHz(C=O)CH3(g) + 402(9) ► 300,(9) + 3 H20(9) 127 X kJ Supporting Materials Periodic Table 1 Supplemental Data Constants and Factors Additional Materials eBook
Question 6 1 pts Find the average enthalpy of the PF bond in PFs(g) from the following standard molar enthalpies of formation (in kJ/mol): PF5(g) (-1595), P(g) (315), F(g) (79). 461 kJ/mol 177 kJ/mol 491 kJ/mol 398 kJ/mol 394 kJ/mol
Bond Enthalpies
CHM113 Chapter 8 Resource Worksheets AH AH,+AH2 Resource 5: Bond Enthalpies 1. Estimate the enthalpy change of the following reactions using the bond energies below. a. H-H. CI-CI - H- C H -CI AHLEWJI 14: 2 0 d. CH_(g) +H:(g) - C He(g) e. 2 NH; + 3 HOCI ™N2 + 3 H2O + 3 HCI f. CH. (8) +20,($) → CO. (8) + 2 H20 (2) g. 2 H (@) +0, (g) → 2 HO () h....
The table below lists the average bond energies that you would need to determine reaction enthalpies. Use bond energies to calculate the enthalpy of formation of NH3 in kJ/mol. Express your answer numerically, in terms of kJ/mol and to three significant figures.
Part A. Find the average enthalpy of the PF bond in PF5(g) from
the following standard molar enthalpies of formation (in kJ/mol):
PF5(g) (–1595), P(g) (315), F(g) (79).
Part B.
Using the bond energies from the table below estimate AH for the following reaction C2H2(g) + H2(g) → C2H4(g) Bond Bond energy [kJ/mol] [C-H 413 H-H 436 |C-C 348 C=C 614 csc 839
Using the standard enthalpy of formation data, show how the standard enthalpy of formation of HF(g) can be used to determine the bond energy. (Enter unrounded values.) (a) bond energy calculated from standard enthalpy of formation kJ/mol (b) average bond enthalpy from the bond enthalpy table k]/mol Average Bond Enthalpies bondAH bond (kJ/mol) bond AHbond (kJ/mol) bond AH bond (kJ/mol) bond AH bond (kJ/mol) O-H 0-0 467 146 495 185 203 156 364 522 335 544 413 347 614 839...
Use the molar bond enthalpy data in the table to estimate the value of AH x for the equation CCI,() +2F2(g) → CF.(g) + 2 C12(8) The bonding in the molecules is shown. kJ. mol- 890 390 159 418 -945 155 243 FF C-CI F- C- F + F-F Average molar bond enthalpies. (Hbond) Bond kJ. mol-1 Bond O-H 464 CEN 0-0 142 N-H C-o 351 N-N 0=0 502 NEN C=0 730 N=N C-C 347 F-F C=C 615 CI-CI CEC...
Use the molar bond enthalpy data in the table to estimate the Average molar bond enthalpies. (Hd value of AHn for the equation kJ mol Bond Воnd kJ mol CH)+HBrig)C,H,Brig) O-H 464 CEN 890 O-O The bonding in the molecules is shown. 142 N-H 390 C-O 351 N-N 159 H Br O-O 502 N-N 418 H-Br NEN C-O 730 945 C-C 347 F-F 155 Enter numeric value С-С 615 CI-CI 243 AH = C C Br-Br I kJ 811 192...
N2(8) + 3F2(g) → 2 NF3() AH 298 = - 264 kJ mol-'; AS98 = - 278 J K-'mol-' The following questions relate to the synthesis reaction represented by the chemical equation in the box above. a. Calculate the value of the standard free energy change, AG 298. for the reaction. b. Determine the temperature at which the equilibrium constant, Keg, for the reaction is equal to 1.00. (Assume that Hº and AS are independent of temperature.) c. Calculate the...