Phenyl acetate, an ester, reacts with water according to the equation The data in the table were collected for this reaction at 5C (a) Plot the phenyl acetate concentration versus time, and describe the shape of the curve observed (b) Calculate the rate of change of the phenyl acetate concentration...

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Phenyl acetate, an ester, reacts with water according to the equation The data in the table were

Question:

Phenyl acetate, an ester, reacts with water according to the equation CH3COC6H5 + HO phenyl acetate CHCOH + C6H5OH acetic acid phenol

The data in the table were collected for this reaction at 5°C. Time (s) 0 15.0 30.0 45.0 60.0 75.0 90.0 [Phenyl acetate] (mol/L) 0.55 0.42 0.31 0.23 0.17 0.12 0.085

(a) Plot the phenyl acetate concentration versus time, and describe the shape of the curve observed.
(b) Calculate the rate of change of the phenyl acetate concentration during the period 15.0 seconds to 30.0 seconds and also during the period 75.0 seconds to 90.0 seconds. Why is one value smaller than the other?