Explain the main bands appearing in the IR spectra of alkanes and alkenes. What are the differences in the IR spectra of these two classes of compounds?

Infrared (IR) spectroscopy is a valuable technique used to identify functional groups and analyze the molecular structure of organic compounds. Alkanes and alkenes are two distinct classes of hydrocarbons, and their IR spectra exhibit characteristic bands associated with different types of molecular vibrations.

IR Spectra of Alkanes:

Alkanes are saturated hydrocarbons consisting of only carbon-carbon (C-C) and carbon-hydrogen (C-H) single bonds. The main bands in the IR spectra of alkanes include:

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