Worksheet: Second-Order Integrated Rate Laws

In this worksheet, we will practice using the integrated rate law for a second-order reaction to calculate the rate constant and initial concentration.

Q1:

The dimerization of butadiene (CH)46 is a second-order reaction with a rate constant of 5.76×10 L/mol⋅min under certain conditions. The initial concentration of a sample of butadiene is 0.0200 M and the volume of the sample is constant. Calculate the concentration of butadiene after 20.0 minutes.

Q2:

The dimerization of butadiene (CH)46 is a second-order reaction with a rate constant of 5.76×10 L/mol⋅min under certain conditions. The initial concentration of a sample of butadiene is 0.200 M and the volume of the sample is constant. Calculate the concentration of butadiene after 10.0 minutes.

Q3:

The decomposition of acetaldehyde is a second-order reaction with a rate constant of 1.320×10 L/mol⋅s. Calculate to 3 significant figures the instantaneous reaction rate for an acetaldehyde solution with a concentration of 5.220×10 M.

  • A9.10×10 M/s
  • B2.72×10 M/s
  • C4.75×10 M/s
  • D6.89×10 M/s
  • E3.60×10 M/s

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