2. The kinetics of acid hydrolysis of s-di(2-carboxyphenoxy)-dimethyl ether was studied spectrophotometrically by the release of methyl salicylate and the following data were obtained:
Time, days 0 0.8 2.9 4.6 6.7 8.6 11.7
Wholesale density 0.129 0.141 0.162 0.181 0.200 0.213 0.229
Determine the 1st order rate constant of the hydrolysis reaction.

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