Can you help me with these questions please If the permanganate solution was not
ID: 509323 • Letter: C
Question
Can you help me with these questions please If the permanganate solution was not thoroughly acidified, what would be the effect on the yield of the product? Explain your answer. Linoleic acid differs from oleic acid by two hydrogens, having two double bonds instead of one. Calculate the number of grams of KOH and KMnO_4 needed to completely hydroxylate 7.5 g of this compound. Complete the reactions below: Explain the basis for recommending the use of allyl alcohol to discharge the purple color of KMnO_4 in the above procedure.
Explanation / Answer
CH3CH=CHCH3 + KMnO4/H2O , cold = CH3CHOHCHOHCH3 (Syn diol will formed0
CH3CH=CHCH3 + KMnO4/H2O, hot = 2 CH3COOH (hydroxylation with elimination of water molecule lead to formation of 2 acetic acid molecule.
Ans 4 KMnO4 is purple in colour but on reacting with allylalcohol, it colours discharge because allyl alcohol have alkene moeity which react with KMnO4 to give diol formation.