a plot of ln[RCOOR'] versus t gave a straight line with slope = -71.5 s-1 and y-intercept = -6.91. 1a) What is the order "n"? n = 1b) What is the corresponding pseudo rate constant k'? (include appropriate units) k' =

a plot of ln[RCOOR'] versus t gave a straight line with slope = -71.5 s-1 and y-intercept = -6.91. 1a) What is the order "n"? n = 1b) What is the corresponding pseudo rate constant k'? (include appropriate units) k' =

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter11: Chemical Kinetics: Rates Of Reactions

Section: Chapter Questions

Problem 113QRT

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Question

Consider the base hydrolysis of an ester.
RCOOR' + OH⁻ → RCOO⁻ + R'OH     (where R and R' represent organic groups).

The kinetics of this reaction, for a particular ester, were studied using the isolation method.

When [OH⁻] >> [RCOOR'] a pseudo-rate law can be posed:

  −d[RCOOR′]dt=k′[RCOOR′]^n

With initial concentrations:
  [OH⁻]₀ = 0.900 M
  [RCOOR']₀ = 0.0010 M,
  a plot of ln[RCOOR'] versus t gave a straight line with slope = -71.5 s^-1 and y-intercept = -6.91.

1a) What is the order "n"?
n =
1b) What is the corresponding pseudo rate constant k'? (include appropriate units)
k' =

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