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Friday, January 31, 2020

Prpare Benzilic acid (1-hydroxyl-1,1-diphenylethanoic acid) from either cis or trans stilbene.



First Convert stilbene into vicinal alcohol by oxidation with cold KMnO4 and on acidification gives Benzilic which undergoes rearrangment to form Benzilic acid

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50 Cm3 of 0.04 M K2Cr2O7 in acidic medium oxidized a sample of H2S gas to Sulphur . The volume of 0.03 M KMnO4 required to Oxidize the same amount of H2S gas to Sulphur, in acidic medium is.


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