Use the bond enthalpy data given to estimate the enthalpy of
reaction for the addition of HBr to acetylene gas, C2H2 to form
C2H4Br2 (with the condensed structural formula Br-CH2-CH2-Br ) at
25°C.
BE(C-C) = 348 kJ/mol;
BE(CC triple bond) = 839 kJ/mol;
BE(C-H) = 413 kJ/mol;
BE(H-Br) = 366 kJ/mol;
BE(C-Br) = 276 kJ/mol
-581 kJ/mol |
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-4949 kJ/mol |
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+155 kJ/mol |
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-887 kJ/mol |
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+887 kJ/mol |
Use the bond enthalpy data given to estimate the enthalpy of reaction for the addition of...
13. (12 pts) Using the following bond dissociation energies, estimate the enthalpy of the reaction for the reaction between acetylene and hydroiodic acid to generate 1,2-diiodoethane. нн H-CEC-H 2 H- Bond Bond Enthalpy (kJ/mol) Bond Bond Enthalpy (kJ/mol) 839 C-H 413 С-С сс 348 C-I 240 Н-1 299 7
Using the table of average bond enthalpies, what is the ∆H for the following gas phase reaction (in kJ/mol)? Bond Ave. Bond Enthalpy (kJ/mol) C – C 348 C = C 614 C ≡ C 839 C – H 413 C – Br 276 H – Br 366 H – H 436 a - 304 b + 304 c - 2134 d - 57 e + 3292
Using the table of bond energies below, the delta H for the reaction is? H2C = CH2 + H-Br -> H3C - CH2Br This is ethylene plus hydrogen going to ethyl bromide. Bond C-C C = C C - H H - Br C - Br D (kj/mol) 348 614 413 366 276 SHOW WORK
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
Use the molar bond enthalpy data in the table to estimate the value of AHin for the equation Bond O-H 0-0 C-O kJ. mol- 464 142 CH,(8) + 4CI,(8) CCI (B) + 4 HCI(8) Bond CEN N-H N-N NEN kJ. mol-1 890 390 159 418 945 351 The bonding in the molecules is shown. O=0 502 a 730 NEN CC CHCI CH CCI C=0 C-C 347 F-F 155 a CEC - 615 811 414 Ahir J.mol-1 439 C-F C-Cl C-BI...
Using the bond energies from the table below estimate ∆H for the following reaction C2H2(g) + H2(g) → C2H4(g) C-H (413), H-H (436), C-C (348), C=C (614), C≡C (839) A) +165 kJ/mol B) -390. kJ/mol C) +390. kJ/mol D) –124 kJ/mol E) –165 kJ/mol
The enthalpy change for the following reaction is 95.4 kJ. Using bond energies, estimate the N-H bond energy in N2H4(g). N2(g) + 2H2(g) N2H4(g) kJ/mol The enthalpy change for the following reaction is -92.2 kJ. Using bond energies, estimate the H-H bond energy in H2(g). 2NH3(g) N2(g) + 3H2(g) kJ/mol D Single Bonds Multiple Bonds C N O F Si P S a Br 1 H 436 413 391 463 565 318 322 347 C 413 346 305 358 485...
Use bond energies to estimate the enthalpy of formation of HBr(g). BE(H–H) = 436 kJ/mol BE(Br–Br) = 192 kJ/mol BE(H–Br) = 366 kJ/mol A –52 kJ/mol B +262 kJ/mol C +104 kJ/mol D +52 kJ/mol E –104 kJ/mol
Use the molar bond enthalpy data in the table to estimate the value of AHrxn for the equation Average molar bond enthalpies. (Hbond) Bond kJ mol- Bond kJ mol- The bonding in the molecules is shown here. O-H 464 O-O 142 C-O 351 O-O502 CO 730 C-C 347 С-С |615 811 414 439 C-Cl 331 C-Br 276 C-N 293 615 890 N-H 390 N-O 201 418 N O 607 155 1243 Br-Br192 435 565 H-CI 431 H-Br 368 F-F |CI-CI...
Use the molar bond enthalpy data in the table to estimate the value of AHixn for the equation Average molar bond enthalpies. (Hbond) kJ · mol-1 NH2(g) + 2O2(g) — HNO2(g) + H2O(g) Bond CON 464 Bond 0-H 0-0 C-O kJ mol-1 890 390 201 N-H The bonding in the molecules is shown. N-O O=O 142 351 502 730 418 + + C=O N=N N=0 F-F 607 347 155 615 243 A Hinc C-C C=C CEC C-H AHxn = C1-C1...