Question
Tue December 06, 2011 By:

how can i find the formula of an ester by looking at the name given , explain briefly

Expert Reply
Wed December 07, 2011

lets take example of methyl propanoate

An ester name has two parts - the part that comes from the acid (propanoate) and the part that shows the alkyl group (methyl).

Start by thinking about propanoic acid - a 3 carbon acid with no carbon-carbon double bonds.

The hydrogen in the -COOH group is replaced by an alkyl group - in this case, a methyl group.

One more example: ethyl ethanoate.

This is probably the most commonly used example of an ester. It is based on ethanoic acid ( hence, ethanoate) - a 2 carbon acid. The hydrogen in the -COOH group is replaced by an ethyl group.

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