1. A certain reaction has the form aA → Products At a particular temperature, concentration versus time data were collected. A plot of [A] vs t (in seconds) gave a straight line with a slope of -6.90 × 10-2. If [A]o for this reaction is 0.100 M, calculate the first half-life (in seconds). seconds = 2. A certain reaction has the form aA → Products At a particular temperature, concentration versus time data were collected. A plot of ln[A] vs t (in seconds) gave a straight line with a slope of -6.90 × 10-2. If the original concentration (at t = 0) is 0.100 M, calculate the second half-life (in seconds) for this experiment. s= 3.For the decomposition of dinitrogen pentoxide in carbon tetrachloride solution at 30 °C 2 N2O54 -->NO2 + O2 the average rate of disappearance of N2O5 over the time period from t = 0 min to t = 137 min is found to be 1.62×10-3 M min-1. The average rate of formation of O2 over the same time period is ---M min-1. 4. For the decomposition of nitrosyl bromide at 10 °C 2 NOBr2 NO + Br2 the average rate of disappearance of NOBr over the time period from t = 0 s to t = 9 sis found to be 1.81×10-2 M s-1. The average rate of formation of Br2 over the same time period is ------M s-1.

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter11: Chemical Kinetics

Section: Chapter Questions

Problem 98CWP: A certain reaction has the form aAProducts At a particular temperature, concentration versus time...

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1. A certain reaction has the form

aA → Products

At a particular temperature, concentration versus time data were collected.
A plot of [A] vs t (in seconds) gave a straight line with a slope of -6.90 × 10^-2.

If [A]_o for this reaction is 0.100 M, calculate the first half-life (in seconds).

seconds =

2. A certain reaction has the form

aA → Products

At a particular temperature, concentration versus time data were collected.
A plot of ln[A] vs t (in seconds) gave a straight line with a slope of -6.90 × 10^-2.

If the original concentration (at t = 0) is 0.100 M, calculate the second half-life (in seconds) for this experiment.

3.For the decomposition of dinitrogen pentoxide in carbon tetrachloride solution at 30 °C

2 N₂O₅4 -->NO₂ + O₂

the average rate of disappearance of N₂O₅ over the time period from t = 0 min to t = 137 min is found to be 1.62×10^-3 M min^-1.

The average rate of formation of O₂ over the same time period is ---M min^-1.

4. For the decomposition of nitrosyl bromide at 10 °C

2 NOBr2 NO + Br₂

the average rate of disappearance of NOBr over the time period from t = 0 s to t = 9 sis found to be 1.81×10^-2 M s^-1.

The average rate of formation of Br₂ over the same time period is ------M s^-1.

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