List the three requirements that must be met before a

Question

Assume that the following reaction is a single-step reaction in which a C-Br bond is broken as the C-I bond is formed. The heat of reaction is +38 kJ/mol.

I^-_(aq) + CH₃Br_(aq) + 38 kJ → CH₃I_(aq) + Br^-_(aq)

a. List the three requirements that must be met before a reaction between I^- and CH₃Br is likely to take place.

b. Explain why, in the process of this reaction, it is usually necessary for the new C-I bonds to form at the same time that the C-Br bonds are broken.

c. Explain why a collision between an I^- ion and a CH₃Br molecule must have a certain minimum energy (activation energy) in order to proceed to products.