Problem: A reaction in which A → products was monitored as a function of time and the results are shown below. Time (s)  [A] (M) 01.000250.914500.829750.7441000.6591250.5731500.4881750.4032000.318What is the rate of reaction when [A] = 0.21 M ?

FREE Expert Solution

We are asked to determine the rate of reaction at a given concentration.

We shall determine the reaction order first.

Recall that:

  • a plot of Concentration, [A] vs. time is used to determine a zero-order reaction
  • a plot of ln [A] vs. time is used to determine a first-order reaction 
  • a plot of 1/[A] vs. time is used to determine a second-order reaction

Therefore we have a zero-order reaction.


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Problem Details
A reaction in which A → products was monitored as a function of time and the results are shown below.


 Time (s [A] (M
01.000
250.914
500.829
750.744
1000.659
1250.573
1500.488
1750.403
2000.318


What is the rate of reaction when [A] = 0.21 M ?

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