Q:

What is a benzoate ion?

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Quick Answer

A benzoate ion refers to the salts and esters of benzoic acid. The formula for a benzoate ion is written as C7H5O2 with a charge of -1. Benzoate can be used as a food preservative.

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Full Answer

Due to its negative charge, a benzoate ion is known as an anion. Ions with a positive charge are known as cations. Benzoate can be formed by the reaction between carbon dioxide and the phenyl anion. A benzoate ion is also the product of a reaction between benzaldehyde, sodium hydroxide and water, where water is used as a solvent. It is used in the Br√łnsted acid reaction, where it combines with a hydrogen atom to form benzoic acid.

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