When ethyl acetate in dilute aqueous solution is heated in the presence of a small amount of acid, it decomposes to acetic acid and ethanol according to the equation CH:COOC;Hs + H;0 -> CH;COOH + CHOH Since the reaction takes place in dilute solution, the quantity of water present is so great that the loss of the small amount which combines with ethyl acetate produces no appreciable change in the total amount. Hence, of the reacting substances, only ethyl acetate suffers a measurable change in concentration. A chemical reaction of this sort, in which the concentration of only one reaction substance changes, is called a first-order reaction. It is a law of physical chemistry that the rate at which a substance is being used up in a first order reaction is proportional to the amount of that substance instantaneously present. If the initial concentration of ethyl acetate is Co, find the expression for its concentration at any time t.

When ethyl acetate in dilute aqueous solution is heated in the presence of a small amount of acid, it decomposes to acetic acid and ethanol according to the equation CH:COOC;Hs + H;0 -> CH;COOH + CHOH Since the reaction takes place in dilute solution, the quantity of water present is so great that the loss of the small amount which combines with ethyl acetate produces no appreciable change in the total amount. Hence, of the reacting substances, only ethyl acetate suffers a measurable change in concentration. A chemical reaction of this sort, in which the concentration of only one reaction substance changes, is called a first-order reaction. It is a law of physical chemistry that the rate at which a substance is being used up in a first order reaction is proportional to the amount of that substance instantaneously present. If the initial concentration of ethyl acetate is Co, find the expression for its concentration at any time t.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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