Chemistry
7th Edition
ISBN: 9780321940872
Author: John E. McMurry, Robert C. Fay, Jill Kirsten Robinson
Publisher: PEARSON
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Chapter 7, Problem 7.56CP
Explain the difference in the
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For the following chemical reaction determine the heat of reaction (Bond enthalpy). Is this reaction exothermic or endothermic?
H2C == CH2 + HCl ⟶⟶ CH3CH2Cl
Bond Energy: C–H : 100 kcal/mol ; C=C: 145kcal/mol ; C-C: 83 kcal/mol ; H-Cl: 102 kcal/mol ; C-Cl : 81 kcal/mol
bonds in reactant : 4 C-H , C=C, H-Cl
bonds in Products: C-C, 5 C-H, C-Cl
4. Calculate the standard enthalphy change (AH") for the following reaction:
H2(g) + Iz(g) → 2 HI(g)
Using
(a) bond dissociation energies
(H-H : 436.4 kJ/mol; I-I : 151.0 kJ/mol; H-I : 298.3 kJ/mol)
iii) What is Bond Energy Term?
iv) Given the following bond energy terms;
C=C: +835KJmol-1, C-C : +346KJmol-1, C-H: +413KJmol-1, H-H: +436KJmol-1.
Determine the enthalpy change for the reaction:
2H2 (g) + C2H2 (g)
→ CH3CH3 (g)
Chapter 7 Solutions
Chemistry
Ch. 7 - Prob. 7.1PCh. 7 - Conceptual APPLY 7.2 An electrostatic potential...Ch. 7 - Prob. 7.3PCh. 7 - Prob. 7.4ACh. 7 - Prob. 7.5PCh. 7 - Prob. 7.6ACh. 7 - Prob. 7.7PCh. 7 - Prob. 7.8ACh. 7 - Prob. 7.9PCh. 7 - Prob. 7.10A
Ch. 7 - Prob. 7.11PCh. 7 - Prob. 7.12ACh. 7 - Prob. 7.13PCh. 7 - Prob. 7.14ACh. 7 - Prob. 7.15PCh. 7 - Prob. 7.16ACh. 7 - Prob. 7.17PCh. 7 - Prob. 7.18ACh. 7 - Prob. 7.19PCh. 7 - Prob. 7.20ACh. 7 - Prob. 7.21PCh. 7 - Prob. 7.22ACh. 7 - Prob. 7.23PCh. 7 - Prob. 7.24PCh. 7 - Prob. 7.25PCh. 7 - Prob. 7.26PCh. 7 - Prob. 7.27PCh. 7 - Prob. 7.28PCh. 7 - Prob. 7.29CPCh. 7 - Prob. 7.30CPCh. 7 - Prob. 7.31CPCh. 7 - Prob. 7.32CPCh. 7 - Prob. 7.33CPCh. 7 - Prob. 7.34CPCh. 7 - Prob. 7.35CPCh. 7 - Prob. 7.36CPCh. 7 - Prob. 7.37CPCh. 7 - Prob. 7.38CPCh. 7 - Prob. 7.39CPCh. 7 - Prob. 7.40CPCh. 7 - Prob. 7.41CPCh. 7 - Prob. 7.42CPCh. 7 - Prob. 7.43CPCh. 7 - Prob. 7.44CPCh. 7 - Prob. 7.45CPCh. 7 - Prob. 7.46CPCh. 7 - Prob. 7.47CPCh. 7 - Prob. 7.48CPCh. 7 - Which of the substances...Ch. 7 - Prob. 7.50CPCh. 7 - Order the following compounds according to the...Ch. 7 - Prob. 7.52CPCh. 7 - Prob. 7.53CPCh. 7 - Prob. 7.54CPCh. 7 - Prob. 7.55CPCh. 7 - Explain the difference in the bond dissociation...Ch. 7 - Explain the difference in the bond dissociation...Ch. 7 - Prob. 7.58CPCh. 7 - Prob. 7.59CPCh. 7 - Prob. 7.60CPCh. 7 - Prob. 7.61CPCh. 7 - Prob. 7.62CPCh. 7 - Prob. 7.63CPCh. 7 - Prob. 7.64CPCh. 7 - Prob. 7.65CPCh. 7 - Prob. 7.66CPCh. 7 - Prob. 7.67CPCh. 7 - Prob. 7.68CPCh. 7 - Prob. 7.69CPCh. 7 - Prob. 7.70CPCh. 7 - Prob. 7.71CPCh. 7 - Identify the third-row elements, X, that form the...Ch. 7 - Identify the fourth-row elements, X, that form the...Ch. 7 - Prob. 7.74CPCh. 7 - Prob. 7.75CPCh. 7 - Methyiphenidat (C14H19NO2) , marketed as Ritalin,...Ch. 7 - Prob. 7.77CPCh. 7 - Prob. 7.78CPCh. 7 - Prob. 7.79CPCh. 7 - Prob. 7.80CPCh. 7 - Prob. 7.81CPCh. 7 - Prob. 7.82CPCh. 7 - Prob. 7.83CPCh. 7 - Prob. 7.84CPCh. 7 - Prob. 7.85CPCh. 7 - Prob. 7.86CPCh. 7 - Prob. 7.87CPCh. 7 - Prob. 7.88CPCh. 7 - Prob. 7.89CPCh. 7 - Prob. 7.90CPCh. 7 - Draw two electron-dot resonance structures that...Ch. 7 - Prob. 7.92CPCh. 7 - Prob. 7.93CPCh. 7 - Prob. 7.94CPCh. 7 - Prob. 7.95CPCh. 7 - Prob. 7.96CPCh. 7 - Prob. 7.97CPCh. 7 - Prob. 7.98CPCh. 7 - Prob. 7.99CPCh. 7 - Write an electron-dot structure for chloral...Ch. 7 - Prob. 7.101CPCh. 7 - Prob. 7.102CPCh. 7 - Prob. 7.103CPCh. 7 - Prob. 7.104CPCh. 7 - Prob. 7.105CPCh. 7 - 7.106 Themolecule has nitrogen-oxygen bonds, but...Ch. 7 - Prob. 7.107CPCh. 7 - Prob. 7.108MPCh. 7 - Prob. 7.109MPCh. 7 - Prob. 7.110MPCh. 7 - Prob. 7.111MPCh. 7 - Prob. 7.112MP
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- In general the higher the charge on the ions in an ionic compound, the more favorable the lattice energy. Why do some stable ionic compounds have +1 charged ions even though +4, + 5, and +6 charged ions would have a more favorable lattice energy?arrow_forwardIs this system endothermic or exothermic, and why? * H2 + CO2 CH202 Reactant bond energies: H-H is 432 kJ/mol, C=O is 799 kJ/mol Product bond energies: C-H is 413 kJ/mol, C=0 is 745 kJ/mol, C-O is 358 kJ/mol, O-H is 467 kJ/mol It is exothermic because more energy is given off by the products versus the amount needed to break up the reactants. It is exothermic because more energy is needed to break up the reactants versus the amount given off by the products. It is endothermic because more energy is needed to break up the reactants versus the amount given off by the products. It is endothermic because more energy is given off by the products versus the amount needed to break up the reactants.arrow_forwardThe enthalpy change for the following reaction is -148 kJ. Using bond energies, estimate the C-H bond energy in CH3CI(g). CH3CI(g) + Cl₂(g) →→→CH₂Cl₂(g) + HCl(g) kJ/molarrow_forward
- Average Bond Energies (kJ/mol) Single Bonds Multiple Bonds H-H 432 N-H 391 149 C=C 614 H-F 565 N-N 160 –Cİ 208 =C 839 H-CI 427 N-F 272 –-Br 175 0=0 495 N-CI H-Br H–I 363 295 200 243 C=0* 745 N-Br S-H 347 1072 N-O 201 S-F 327 N=0 607 C-H 413 0-H 467 S-CI 253 N=N 418 С-С 347 0-O 146 S-Br 218 N=N 941 C-N 305 O-F 190 S-S 266 C=N 615 C-O C-F 0-CI O-I 358 203 CEN 891 485 234 Si-Si 340 C-CI 339 Si-H 393 С—Br 276 F-F 154 Si-C 360 C–I 240 F-CI 253 Si-O 452 F-Br C–CI C-S 259 237 239 C-Br 218 Br-Br 193 *C=0 (CO2) = 799 Acetic acid is responsible for the sour taste of vinegar. It can be manufactured using the following reaction: CH3OH(g) + C=O CH3 C-OH(1) Use tabulated values of bond energies to estimate AH for this reaction. ΔΗ- kJ Calculate AH using standard enthalpies of formation. AH°r[CH3OH(g)] = -200.7 kJ/mol AH°r[CO(g)] = -110.5 kJ/mol AH°F[CH3COOH(1)] = -484.0 kJ/mol AH = kJarrow_forwardIf the following reaction is given: C2H5F + Cl2 || AHran If the bond energy for C-H is 414 kJ/ mole, the bond energy for C-C is 347 kJ/mole, the bond energy for C-Cl is 377 kJ/ mole, the bond energy for Cl-Cl is 243 kJ/ mole, the bond energy for C-F is 450 kJ/ mole and the done energy for H-Cl is 431 kJ/ mole, determine the bond energy for the H-F bond in kJ/mole. C2H4Cl2 + HF 151kJ mole Give your answer as a positive value as all energies for bond values should be written in terms of a positive value (the energy needed to break the bond = endothermic)arrow_forwardBond Bond Energy (kJ/mol) Bond Bond Energy (kJ/mol) C-C 347 C=O (in CO2) 799 C=C 614 C=O 745 C≡C 839 C≡O 1070 C-H 413 O=O 498 O-H 467 N-H 391 H-H 432 N≡N 945 C-O 358 N-Cl 200 C-N 305 N-O 201 C-Cl 339 C≡N 891 Cl-Cl 243 S-Cl 250 S=O 535 S-S 215 S-O 364 S-H 339 Using the table of bond energies above, estimate the enthalpy change (kJ) for the following reaction: CH4+2O2⟶CO2+2H2Oarrow_forward
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