For the reaction below:

a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. 

fill in the blank 1

b. Is the reaction exothermic or endothermic? 

exoendoneither

 

c. Is the reaction likely to proceed spontaneously in the direction written? 

yes no uncertain 

For the reaction beloW. CO2 + a. Determine whether the reaction is energetically favorable at room temperature. Assume that AS-0. Calculate the gas phase enthalpy change using bond dissociation enthalpies at 25°C from the table below. tion tion Bond Bond Enthalpy kJ (kcal/mo Enthalpy BondEnthalpy kJ (kcalVmol kJ (kcalVmol 435 (104) 439 (105) CC 376 (90) C-N 355 (85) C-O | 385 (92) C-O(aldehyde) 728 (174) C=O (CO2) | 803 (192) CEO H-H C-H (-CH3 ) | 422 (101) C-HCH2464 (111)C238 (57) C-H CH) 556 (133) N-H 1075 (257) 950 (227) 966 (231) 498 (119) C-Si 301 (72) C=C | 727 (174) 391 (93) 318 (76) Hint: Be aware that the bond energy for the C-H bond varies considerably and may change during the reaction; therefore, you will find several entries for C-H bonds in the table. Include the algebraic sign and specify units, e.g. -45 kJ/mol. Calculate to the nearest single energy unit. b. Is the reaction exothermic or endothermic?

eople Window Help [A] 4) 100% T Mon 9:16 PM Me /なowLv21 Online teaching a × m/ilrn/takeAssignment/takeCovalentActivity.do?locator assignment-take&ta App Update Ava New software is reac installed or the reaction below: CO2 + a. Determine whether the reaction is energetically favorable at room temperature. Assume that AS O. Calculate the gas phase enthalpy change using bond dissociation enthalpies at 25 C from the table below. Enthalpy kJ (kcal/mol Enthalpy kJ (kcal/mol BondEnthalpy Bond Bond kJ (kcalVmol 435 (104)CC 376 (90) 439 (105) | C-N | 355 (85) | C-_0 | 385 (92) | c_1 | 238 (57) --Si | 301 (72) | C=C | 727 (174) H-H C=O (aldehyde)| 728 (174) | c=0 (co2) | 803 (192) C-H (-CH, ) | 422 (101) C_H (-CH2)| 464 (111) C-H ( CH ) | 556 (133) N-H Si--H 1075 (257) 950 (227) 966 (231) 498 (119) | 0-0 391 (93) 318 (76) Ilint: Be aware that the bond energy for the C.II bond varies considerably and may change during the reaction therefore, you will find several entries for C-II bonds in the table. Include the algebraic siga and speeifly units, e.g. 45 kil/mol. Calculate to the nearest single ehergy unit. kJ/mol. Calculate to the nearest single energy unit b. Is the reaction exothermic or endothermic

Use the standard enthalpies of formation from Appendix II (A-7 to A-12) to calculate the enthalpy change (in kJ) for the photosynthesis of glucose at 298 K and 1 atm. Is the preceding reaction endothermic or exothermic? Endothermic Exothermic Use the standard enthalpies of formation from Appendix II (A-7 to A-12) to calculate the enthalpy change (in kJ) for the reduction of iron (III) oxide to iron at 298 K and 1 atm. (Calculate it for the reaction as written, namely 2 moles of iron (111) oxide and 3 moles of carbon.)