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J & K CETJ & K CET 2008Aldehydes Ketones and Carboxylic Acids
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Solution:
Hydroxamic acid test is used to detect the presence of esters.
In hydroxamic acid test a few crystals or a few drops of the substance is dissolved in 1mL of 95% ethanol +1mL of 1MHCl.
Then, a drop of 5%FeCl3 is added.
Formation of characteristic colour shows the presence of acyl or ester group.