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- 4) H3C Br Br CH3 'CI + + HỈOH Н ОН Дон ОН SH КОН H2Oqor Br qom OH B -Br OCH₂ -OCH₂CH3How do I (a) determine the energy change in the following reaction2 O2 + CH4→ CO2 + 2 H2Ogiven the following bond dissociation energies:C-C 340kJ/mol; C-H 420kJ/mol; O=O 490 kJ/mol; O-H 460 kJ/mol; C=O 720 kJ/mol. (b) Is the reaction exothermic or endothermic? Explaination?
- < S TA C9 D B 20 O +:12. The combustion of what volume of ethanol, measured at 23°C and 765 mm Hg, would be required to heat 1727 g of water from 25°℃ to 78°C? (AH data table provided in anwer key) C₂H5OH (1) + 3 02 (8) → 2 CO2 (g) + 3 H₂O (1)Name ti.. organic compounds: structure name Он H H H Н— С — С — С — С — н | | || | н нн н CH, — сн,-сH, — С -ОН | н н H - C- C = 0 CH3 -
- 21. Calculate the enthalpy change, AH, for the following gas phase reaction using bond energy data. H H нн Bond Dissociation Energy | | H-C1 435 kJ/mol C= C +H- Cl Н-С- С-Н С-Н 413 kJ/mol | С-С 348 kJ/mol H H H CI C=C 614 kJ/mol C-C1 328 kJ/mol 2Write a reasonable chain mechanism (mechanistic arrows, intermediates, etc.) for the following reaction. Your mechanism must be based upon currently accepted understanding of chemical reactions.H Br₂ CH3OH ? H Н Н H в то в то OCH 3 Br OCH 3 Br Br CH3O Br CH3O | || ||| IV Br Н Br V