5-The hydrolysis of a series of ethyl benzoates by hydroxide ion in 85% aqueous ethanol has been investigated. A Hammett plot of the second order rate constants (K) gave a reaction constant p = 2.56. Calculate how much faster ethyl 4- nitrobenzoate will undergo base catalyzed hydrolysis compared to ethyl benzoate under similar conditions. O,N

5-The hydrolysis of a series of ethyl benzoates by hydroxide ion in 85% aqueous ethanol has been investigated. A Hammett plot of the second order rate constants (K) gave a reaction constant p = 2.56. Calculate how much faster ethyl 4- nitrobenzoate will undergo base catalyzed hydrolysis compared to ethyl benzoate under similar conditions. O,N

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section: Chapter Questions

Problem 20.27P

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4) The reaction of an aryl amine with nitrite in the presence of perchlorate produces a diazonium salt. The initial rate of this reaction was measured using UV spectrometry at 25°C, at fixed initial concentrations of the aryl amine and perchlorate, but varying the initial concentration of nitrite. 0.06 0.04 0.02 0.01 [nitrite]o / mol dm-³ Initial rate / 108 mol dm-3 s-1 39.0 18.0 5.0 1.5 Using the table of data show that the reaction proceeds according to the rate law rate = k₁[nitrite] + k₂[nitrite]² and calculate values for the rate constants.
5-The hydrolysis of a series of ethyl benzoates by hydroxide ion in 85% aqueous ethanol has been investigated. A Hammett plot of the second order rate constants (Ku) gave a reaction constant p = 2.56. Calculate how much faster ethyl 4- nitrobenzoate will undergo base catalyzed hydrolysis compared to ethyl benzoate under similar conditions. ON 6-The PKa of p-chlorobenzoic acid is 3.98, and that of benzoic acid 4.19. Calculate o-value of p-chloro group.
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