4. An unknown compound, Sample 42, is one of the three compounds listed in Table 2: a mixture of Sample 42 with benzoic acid melts at 84-89 °C; a mixture of Sample 42 with phenyl succinate melts at 118-120 °C; and a mixture of Sample 42 with m-aminophenol melts at 101-102 °C. Based on this information, what is the identity of Sample 42? Explain your reasoning. Table 2: Literature melting points for Sample 42 candidates Compound Benzoic acid Phenyl Succinate m-aminophenol mp, ºc 121 121 122
Catalysis and Enzymatic Reactions
Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.
Lock And Key Model
The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.
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