Benzoic Acid Production
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10 Terms
Why is excess concentrated MnO4- used?
To ensure complete oxidation of benzyl methanol
Why is the reaction done under alkaline conditions?
To make reaction faster
What is used as the alkaline?
Na2CO3
Why is it heated in a waterbath?
To give it time to react
What temperature is the heat water bath?
60 degrees
How long is the flask left in the heated water bath?
20 minutes
What does benzaldeyhyde smell of?
Almond
How is the formation of intermediate aldehyde shown?
Solution turns from purple to brown precipitate
Why does the solution go from purple to brown
MnO4- changes to MnO2-
Why is concentrated HCL added?
Neutralise excess Na2CO3 to form CO2, neutralise KOH formed in the reaction, protonates sodium benzoate, supplies acid conditions for reactions with sodium sulphite to produce soluble Mn2+ from MnO2
Note 
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