Solution Found!
In the Chemistry and the Environment box on free radicals
Chapter 9, Problem 84E(choose chapter or problem)
In the Chemistry and the Environment box on free radicals in this chapter, we discussed the importance of the hydroxyl radical in reacting with and eliminating many atmospheric pollutants. However, the hydroxyl radical does not clean up everything. For example, chlorofluorocarbons—which destroy stratospheric ozone—are not attacked by the hydroxyl radical. Consider the hypothetical reaction by which the hydroxyl radical might react with a chlorofluorocarbon:
Use bond energies to explain why this reaction is improbable.
Questions & Answers
QUESTION:
In the Chemistry and the Environment box on free radicals in this chapter, we discussed the importance of the hydroxyl radical in reacting with and eliminating many atmospheric pollutants. However, the hydroxyl radical does not clean up everything. For example, chlorofluorocarbons—which destroy stratospheric ozone—are not attacked by the hydroxyl radical. Consider the hypothetical reaction by which the hydroxyl radical might react with a chlorofluorocarbon:
Use bond energies to explain why this reaction is improbable.
ANSWER:Solution:Step-1(a) I has atomic number 53, [Kr] 4d 5s 5p 10 2 5 Br has atomic number 35 [Ar] 3d 4s 4p 10 2 5Thus, the valence atomic orbitals of I is 5s , 5p , 5p and 5p .xhe vyence atomizorbitals of Br is4s, 4p x4p ay 4p . zStep-2(b) Bond order of IBrThe MO el