\textbf{230.} Esters, in water undergo a reaction and are converted to \ldots\ldots\ldots\ and \ldots\ldots\ldots\ (carboxylic acids).
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(1) reversible -- very slow -- alcohols \hfill (2) reversible -- fast -- glycerin
(3) irreversible -- very slow -- alcohols \hfill (4) irreversible -- fast -- glycerin
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