Chapter 18 Multiple-choice questions

Chemical analysis: characterizing chemical compounds
. A hydrophobic compound will preferentially partition into an aqueous solvent. True or false?

. A particular compound has a distribution ratio, Kd, of 1.2. When mixed with an organic and an aqueous solvent, into which phase is it most likely to partition?

. The process of passing a mobile phase through a chromatography column is called which one of the following?

. SDS-PAGE separates molecules on the basis of which of the following characteristics?

. The pH at which a protein carries a net zero charge is termed which of the following?

. What is the first stage of the two-stage two-dimensional PAGE?

. Spectroscopy measures the change in behaviour of a molecule when it is exposed to which of the following?

. Which of the following types of spectroscopy can tell us the most about the carbon framework of an organic compound?

. The three H atoms attached to the carbon atom of methanol generate three separate peaks on an 1H NMR spectrum. True or false?

. Infra-red spectroscopy exploits the change in what kind of behaviour in the molecules it is used to study?

. Which one of the following techniques is used to study the three-dimensional structure of a molecule?

. Functional groups that absorb strongly in the UV-visible region of the electromagnetic spectrum are called which one of the following?

. Infra-red spectroscopy helps us to determine which one of the following?

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