At 500 ∘C, cyclopropane (C3H6) rearranges to propene (CH3−CH=CH2). The reaction is first order, and the rate constant is 6.7×10−4s−1. If the initial concentration of C3H6 is 5.00×10−2 M. What is the molarity of C3H6 after 30 min? How many minutes does it take for the C3H6 concentration to drop to 1.20×10−2 M ? How many minutes does it take for 25% of the C3H6 to react?
At 500 ∘C, cyclopropane (C3H6) rearranges to propene (CH3−CH=CH2). The reaction is first order, and the rate constant is 6.7×10−4s−1. If the initial concentration of C3H6 is 5.00×10−2 M. What is the molarity of C3H6 after 30 min? How many minutes does it take for the C3H6 concentration to drop to 1.20×10−2 M ? How many minutes does it take for 25% of the C3H6 to react?
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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At 500 ∘C, cyclopropane (C3H6) rearranges to propene (CH3−CH=CH2). The reaction is first order, and the rate constant is 6.7×10−4s−1. If the initial concentration of C3H6 is 5.00×10−2 M.
What is the molarity of C3H6 after 30 min?
How many minutes does it take for the C3H6 concentration to drop to 1.20×10−2 M ?
How many minutes does it take for 25% of the C3H6 to react?
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Step 1: Determine the concentration and time to take for decrease concentration of cyclopropane:
VIEWStep 2: (i) Calculation for molarity of cyclopropane after 30 minutes of reaction:
VIEWStep 3: (ii) Calculation for time to decrease initial amount of cyclopropane:
VIEWStep 4: (iii) Calculation for time to react 25 % of cyclopropane:
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