Residue

Residue refers to a substance or matter that remains or is left behind after a process or event. In the context of chemistry, a residue may refer to the material left after a distillation or evaporation process. In biology, it can refer to a part of a molecule that remains after the removal of some other molecule, such as water or another simple molecule.

Chemistry

In chemistry, a residue is the material left behind after a distillation or evaporation process. It can also refer to the part of a molecule that remains after the removal of some other molecule, such as water or another simple molecule. For example, in the reaction of an ester with water to form an alcohol and a carboxylic acid, the alcohol is the residue of the ester.

Biology

In biology, a residue often refers to a part of a molecule that remains after the removal of some other molecule. For example, in the process of protein synthesis, an amino acid residue is what remains of an amino acid after a water molecule has been removed in the formation of a peptide bond.

Mathematics

In mathematics, particularly in complex analysis, the residue is a complex number which describes the behavior of line integrals of a function around a singularity. Residues can be computed quite easily and, once known, allow the determination of more complicated line integrals via the residue theorem.

See also

• Distillation
• Evaporation
• Protein synthesis
• Peptide bond
• Residue theorem

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