Consider the bond dissociation energies listed below in kcal/mol.   CH3-Br             70 CH3CH2-Br     68 (CH3)2CH-Br  68 (CH3)3C-Br     65   These data show that the carbon-bromine bond is weakest when bromine is bound to a ________.  

Why is ultraviolet light required for radical reactions?  

The following substituents are attached to a cyclohexane ring. Which substituted cyclohexane is correctly named as a “cyclohexyl alkane”?  

Which of the following reagents should be used to convert 3-hexyne to (Z)-3-hexene?  

What is the leaving group in the following reaction?  

What is the line-angle structure that corresponds to the condensed structure, HOCH2C(O)CH(CH3)2?

Which of the following best describes the molecules of a sample of ethane gas at room temperature?  

Which of the following structures (a-d) is another resonance structure of the following organic molecule?  

Which of the following steps always generates a radical as a product of that step? I. InitiationII. PropagationIII. Termination  

Why would concentrated hydrobromic acid be an inappropriate catalyst for the dehydration of alcohols?