Chemistry Atoms First2e
2nd Edition
ISBN: 9781947172647
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 5, Problem 21E
The bond energy of a
single bond averages
Explain Why the triple bond is not three times as strong as a single bond.
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Students have asked these similar questions
The bond energy of a C–C single bond averages 347 kJ mol−1; that of a C ≡ C triple bond averages 839 kJ mol−1. Explain why the triple bond is not three times as strong as a single bond.
C(s) → C(g), ΔH = +715 kJmol-1
Cl2(g) → 2Cl(g), ΔH = +242 kJmol-1
C(s) + 2Cl2(g) → CCl4(g), ΔH = -135.5 kJmol-1
Calculate the average bond dissociation enthalpy of a C-Cl bond.
Estimate the carbon–fluorine bond energy given that the C-C bond energy is 347 kJ/mol, the C=C bond energy is 614 kJ/mol, and the F-F bond energy is 154 kJ/mol.
Delta H = -549 kJ
Chapter 5 Solutions
Chemistry Atoms First2e
Ch. 5 - Explain how σ and bonds are similar and how they...Ch. 5 - Use valence bond theory to explain the bonding in...Ch. 5 - Use valence bond theory to explain the bonding in...Ch. 5 - How many and bonds are present in the molecule...Ch. 5 - A friend tell you N2 has three bonds due to...Ch. 5 - Draw the Lewis Structures for CO2andCO , and...Ch. 5 - Why is the concept of hybridization required in...Ch. 5 - Give the shape that describes each hybrid orbital...Ch. 5 - Explain why a carbon atom cannot from five bonds...Ch. 5 - What is the hybridization of the central atom in...
Ch. 5 - A molecule with the formula AB3 could have one of...Ch. 5 - Methionine, CH3SCH2CH2CH(NH2)CO2H, is an amino...Ch. 5 - Sulfuric acid is manufactured by a series of...Ch. 5 - Two important industrial chemicals,...Ch. 5 - Analysis of a compound indicates that it contains...Ch. 5 - Consider nitrous acid, HNO2(HONO). (a) Write a...Ch. 5 - Strike-anywhere matches contain a layer of KC1O3...Ch. 5 - Identify the hybridization of each carbon atom in...Ch. 5 - Write Lewis structures for NF3andPF5 . On the...Ch. 5 - In addition to NF3, two other fluoro derivatives...Ch. 5 - The bond energy of a C-C single bond averages...Ch. 5 - For the carbonate ion, CO32 -, draw all of the...Ch. 5 - A useful solvent that will dissolve salts as well...Ch. 5 - For the molecule allene, H2C=C=CH2, give the...Ch. 5 - Identify the hybridization of the central atom in...Ch. 5 - Describe the molecular geometry and hybridization...Ch. 5 - For each of the following molecules, indicate the...Ch. 5 - For each of the following structures, determine...Ch. 5 - Draw the orbital diagram for carbon in CO2 showing...Ch. 5 - Sketch the distribution of electron density in the...Ch. 5 - How are the following similar, and how do they...Ch. 5 - If molecular orbitals are created by combining...Ch. 5 - Can a molecule with an odd number of electrons...Ch. 5 - Can a molecule with an even number of electrons...Ch. 5 - Why are bonding molecular orbital lower in energy...Ch. 5 - Calculate the bond order for an ion with this...Ch. 5 - Explain why an electron in the bonding molecular...Ch. 5 - Predict the valence electron molecular orbital...Ch. 5 - Determine the bond order of each member of the...Ch. 5 - For the first ionizations energy for an N2...Ch. 5 - Compare the atomic and molecular orbitaI diagrams...Ch. 5 - Which of the period 2 homonuclear diatomic...Ch. 5 - A friend tells you that the 2s orbital for...Ch. 5 - True or false: Boron contains 2s22p1 valence...Ch. 5 - What charge would be needed on F2 to generate an...Ch. 5 - Predict whether the MO diagram for S2 would show...Ch. 5 - Explain why N22+ is diamagnetic, while O24+, which...Ch. 5 - Using the MO diagrams, predict the bond order for...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Estimate the enthalpy of the reaction below using the following enthalpies (kJ/mol): NN single bond=160 NN double bond =418, triple bond = 941 HH bond= 432 NH bond =391. N2+ 3H2 -> 2NH3 A. -109 kJ/mol B. +1455 kJ/mol C. -890 kJ/mol D. -632 kJ/molarrow_forwardThe bond energy for C-H bond is about 413 kJ/mol in CH4 but 380 kJ/mol in CHBr3. Although these values are relatively close in magnitude, they are different. Explain why they are different. Does the fact that the bond energy is lower in CHBr3, make any sense? Why?arrow_forwardHbr h2/pdc h3c-c triple bond carrow_forward
- What is the formal charge on each atom in dichloromethane, CH2Cl2? a. C atom = 0, each H atom = 0, and each Cl atom = 0 b. C atom = –2, each H atom = +1, and two Cl atoms = 0 c. C atom = +4, each H = –1, and each Cl atom = –1 d. C atom = +4, each H = +1, and each Cl atom = –1 e. C atom = –4, each H = +1, and each Cl atom = +1arrow_forwardThe partial Lewis structure that follows is for a hydrocarbonmolecule. In the full Lewis structure, each carbon atomsatisfies the octet rule, and there are no unshared electronpairs in the molecule. The carbon—carbon bondsare labeled 1, 2, and 3. (a) How many hydrogen atomsare in the molecule? (b) Rank the carbon–carbonbonds in order of increasing bond length. (c) Whichcarbon—carbon bond is the strongest one?arrow_forwardBonds Bond Energy (kJ/mol) C-H 411 C-Br 285 H-Br 362 Br-Br 190 Determine ΔH for the reaction: CH4 + 2Br2 ----> CH2Br2 + 2HBrarrow_forward
- In the following compounds, the C atoms form a single ring.Draw a Lewis structure for each compound, identify cases for which resonance exists, and determine the carbon-carbon bondorder(s): (a) C₃H₄; (b) C₃H₆; (c) C₄H₆; (d) C₄H₄; (e) C₆H₆.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_forwardConsider the following reaction:H2 (g) + O2 (g) --> H2O2 (g) (Delta)H = -153 kJGiven that the H2 bond energy is 432 kJ/mol, the O2 bond energy is 495 kJ/mol, and the OH bond energy is 467 kJ/mol, estimate the bond energy for the oxygen-oxygen single bond (in kJ/mol).arrow_forward
- What is the formal charge of the oxygen atom in the carbon monoxide molecule? A. 0 B. +1 C. -1 D. +2 E. -2arrow_forwardUse the table below to determine ΔH for the following reactionN 2H 4(g) + H 2O(g) ↔ NH 2OH(g) + NH 3(g) Bond Energies, kJ/mol Single Bonds H C N O S F Cl Br I H 432 C 411 346 N 386 305 167 O 459 358 201 142 S 363 272 --- --- 286 F 565 485 283 190 284 155 Cl 428 327 313 218 255 249 240 Br 362 285 243 201 217 249 216 190 I 295 213 --- 201 --- 278 208 175 149 Multiple Bonds C=C 602 C=N 615 C=O 799 C≡C 835 C≡N 887 C≡O 1072 N=N 418 N=O 607 S=O (in SO2) 532 N≡N 942 O2 494 S=O (in SO3) 469arrow_forwardThe partial Lewis structure that follows is for a hydrocarbonmolecule. In the full Lewis structure, each carbon atomsatisfies the octet rule, and there are no unshared electronpairs in the molecule. The carbon—carbon bondsare labeled 1, 2, and 3. (a) How many hydrogen atomsare in the molecule? (b) Rank the carbon–carbonbonds in order of increasing bond length. (c) Whichcarbon—carbon bond is the strongest one? [Sections 8.3and 8.8]arrow_forward
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