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    Hi, whilst revising I came across this:

    "An ester can be made by reacting an alcohol with a carboxylic acid. The technique usedinvolves four stages: reflux, distillation, purification and drying.

    In the reflux stage, the alcohol and ester are heated with a little concentratedsulfuric acid in a flask with a condenser attached in an upright position. Evaporatedliquid is allowed to run back into the flask.

    In the distillation stage, the mixture is placed in a flask connected to a slopingcondenser and heated. The product is collected at its boiling point."

    The part I made bold is meant to say "the alcohol and carboxylic acid are heated" right? I can't find much help on esters and so I just want to clarify if the above is true before I try memories the 4 steps, so can someone please confirm?

    Thanks.

    Source of above extract:
    http://www.ocr.org.uk/Images/80682-u...accredited.pdf
    Question 2b
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    (Original post by hhelloo)
    Hi, whilst revising I came across this:

    "An ester can be made by reacting an alcohol with a carboxylic acid. The technique usedinvolves four stages: reflux, distillation, purification and drying.

    In the reflux stage, the alcohol and ester are heated with a little concentratedsulfuric acid in a flask with a condenser attached in an upright position. Evaporatedliquid is allowed to run back into the flask.

    In the distillation stage, the mixture is placed in a flask connected to a slopingcondenser and heated. The product is collected at its boiling point."

    The part I made bold is meant to say "the alcohol and carboxylic acid are heated" right? I can't find much help on esters and so I just want to clarify if the above is true before I try memories the 4 steps, so can someone please confirm?

    Thanks.

    Source of above extract:
    http://www.ocr.org.uk/Images/80682-u...accredited.pdf
    Question 2b
    Yes. Esters are made from an alcohol and a CA so it's a typo.
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    Esterification is (always, I suspect?) exothermic. If you want a high yield, you'd be better to wait a while and do it at room temp rather than reflux it.

    But people these days are always in a Goddamn hurry.
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    OK, thanks for the verification, appreciate it.
 
 
 
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