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KMID : 0370219620060010005
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Yakhak Hoeji
1962 Volume.6 No. 1 p.5 ~ p.7
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The Effect of pH on the Condensation Reaction of Bezaldehyde and Semicarbazide
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Abstract
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Like the condensation reaction of general aldehyde, that of benzatdehyde with semicarbazide also depends upon the concentration of cartonium ion that is produced by hydrogen ion. The lower pH value is the facility of the formation of carbonium ion in the condensation reaction, while the reactivity of semicarbazide as a reactant is reduced. In this paper, therefore we want to find out the optirnvm pH value in the condensation reaction of benzaldehyde with semicarbazide. This optimum pH value was determined by using the simple paper-chromatographic method. Accoiding to the result of this experiment, the condensation reaction between benzaldehyde and semicarbazide reacts with its highest point at 3.5 pH value. It seems clear that at this point the benzaldehyde acquires the most suitatle amount of carbonium ion for the condensation reaction with semicarbazide, and the semicarbazide also has the optimum reactivity.
(Received December 2. 1961)
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