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How might you use 2,4-dinitrophenylhydrazine to determine if the crude product obtained from the Grignard reaction...

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Chemistry

How might you use 2,4-dinitrophenylhydrazine to determine if thecrude product obtained from the Grignard reaction between phenylmagnesium bromide and benzaldehyde contains unreacted benzaldehydeas an impurity? Use an equation to illustrate your explanation anddescribe what you would expect to observe.  

Answer & Explanation Solved by verified expert
4.5 Ratings (997 Votes)
httpwwwchemguidecoukorganicpropscarbonylsaddelimhtmlThe reaction has two uses in testing for aldehydes andketonesFirst you can just use it to test for the presence of thecarbonoxygen double bond You only get an orange    See Answer
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