POSTLAB QUESTIONS 1. What is the difference one should see in IR spectroscopy if a compound has a sp* CH versus a sp3 C-H bond? 2. What peaks were present in all of the following? aldehyde, ester, carboxylic acid, amide, ketone 3. How can one distinguish the following? aldehyde, ester, carboxylic acid, amide, ketone 4. Which functional groups are the casiest to detect, which are the hardest 5. Which region of the spectral window do you think refers to the finger print region? Why is it useful?