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1. using the bond energies in the tables provided determine the approximate enthalpy change for the...
1. Using Table 7.2 and 7.3 from Section 7.5Opens externally of
the OpenStax textbook entitled Chemistry 2E by Flowers, Leopold et
al. what is the enthalpy change, ∆H for the decomposition of
hydrogen iodide 2 HI → I2 + H2 kJ/mol
Bond Bond Energy Bond Bond Energy Bond Bond Energy 436 C-s 260 E-Cl 255 H-C 415 C-Cl 330 F-er 235 H-N 390 C-Br 275 Si-si 230 H-O 464 240 Si-P 215 H-F 569 N-N 160 Si-S 225 H-S 395...
Estimate the ΔH° for the following reaction in kJ at
25°C using the table of bond energies provided
below:
CH. Estimate the AH° for the following reaction in kJ at 25°C using the table of bond CH energies provided below: CH,-¢-CH, -hy, CH3-C=CH2 Он Just enter a number (no units). This is an elimination reaction converting an alcohol to an alkene. Ignore the water above the reaction arrow. The water is what is being eliminated. Table 9.2 Average Bond Energies...
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...
Estimate the \DeltaΔH° for the combustion of one mole of hexane
in kJ at 25°C using the table of bond energies provided below.
Table 9.2 Average Bond Energies (kJ/mol) and Bond Lengths (pm) Bond Energy Length Bond Energy Length Bond Energy Length 101 134 Bond Energy Length Single Bonds H-H 432 74 H-F 565 92 H-a 427 127 H-Br 363 141 H-I 295 161 S-H S-S 347 266 146 148 234 161 226 204 TIT 177 327 368 226 158...
By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with accurately known speeds. When HI dissociates, the H atoms move away rapidly, whereas the relatively heavy I atoms move little. Use Table 9.2 in your textbook to answer the following questions: (a) What is the longest wavelength (in nm) that can dissociate a molecule of HI? 4.9) 406 nm (b) If a photon of 226 nm is used, what is the excess energy (in...
Estimate the A Hº for the following reaction in kJ at 25°C using the table of bond energies provided CH3-CH-CH, SO CH3-C-CH, below: OH 2-propanol 2-propanone Just enter a number (no units). This is an oxidation reaction converting an alcohol to a ketone (specifically nail polish remover). Ignore the compounds above and below the reaction arrow; they are the inorganic reagents needed for this acid-catalyzed reaction to proceed. Table 9.2 Average Bond Energles (kJ/mol) and Bond Lengths (pm) Bond Energy...
Table 9.3: Average Bond Energies Bond Energy (kj/mol) Bonic Energy Il/mol) Bond Energy (kJ/mol) Bond Hond H-H 438 N- N 103 NON 418 210 GHz + 50; Propane Oxygen gas 300, + 4H20 Carbon Water dioxide Bond BF Br-CI BB I- 1-Br 484 N-O 200 368 9:46 222 590 272 200 545 NAF NCI N- Br 151 323 431 364 Do your calculations here: 297 159 301 347 142 206 611 0-0 0-0 498 308 623 190 SO OF 0-...
Worksheet 8- Rev 10 Exercise B-Using Hess' Law to determine the enthalpy of a reaction. Using the table below, calculate the enthalpy of each of the following reactions. For partial credit, show all of your work. Average Bond Energies (kj/mol) Multiple Bonds Single Bonds C C 614 149 H-H 432 391 160 272 1-1 N-H N-N 839 CC O-O 208 175 H-F H-CI 565 -CI 495 745 427 N-F 1-Br H-Br 363 C-O N-CI 200 H-I 1072 607 295 347...
Using Table 9.4, calculate an approximate enthalpy (in kJ) for
the reaction of 1.10 g gaseous methanol (CH3OH) in excess molecular
oxygen to form gaseous carbon dioxide and gaseous water. (Hint,
remember to first write the balanced equation.)
TABLE 9.4 Bond Energies (kJ/mol)* Single Bonds C-H 414 C-C 348 C-N 293 C-O 351 C-F 439 C-CI 328 C-Br 276 C-1 238 C-S 259 N-H 889O H 463 FF 159 N-N 163OO 146 C F 253 N-O 201O-F 190 CCI 242...
If you have 1 mol of HBr molecules, and you have a source of
269.7 nm photons that you can use to dissociate those bonds. What
is the excess energy (given in eV) that 1 mole of those photons
carry over what is needed for the dissociation of the bonds? Give
answer in eV/mol
1 eV = 1.6022x10-19 J
Average Bond Energles (kJ/mol) and Bond Lengths (pm) Table 9.2 Energy Length Bond Energy Length Bond Bond Length Bond Length Energy...