The decomposition of ethanol at some constant temperature (above 500°C), over a copper surface, C₂H5OH(g) → CH3CHO(g) + H₂(g) was studied by monitoring the total pressure with time. The following data were obtained: t(s) Ptotal (torr) 0 115 47 126 142 148 236 170 378 203 383 204 What will be the total pressure at t = 460 s? S What is the rate constant (k)? (Include appropriate units.)
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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