Three processes that have been used for the industrial manufacture of acrylonitrile

Chapter 8, Problem 8.181

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Three processes that have been used for the industrial manufacture of acrylonitrile (CH2CHCN), an important chemical used in the manufacture of plastics, synthetic rubber, and fibers, are shown below. Use bond energy values (Table 8.4) to estimate DH for each of the reactions. a. CH2 CH2 HCN O HOC C N H H H H + C C N + H H H HOCH2CH2CN C C H2O b. 4CH2wCHCH3 1 6NO h700C Ag 4CH2wCHCN 1 6H2O 1 N2 The nitrogenoxygen bond energy in nitric oxide (NO) is 630. kJ/mol. c. 2CH2wCHCH3 1 2NH3 1 3O2 88888n 2CH2wCHCN 1 6H2O d. Is the elevated temperature noted in parts b and c needed to provide energy to endothermic reactions?

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