Chemistry Practice Problems Identifying Reaction Order Practice Problems Solution: For the reaction Cyclopropane (g) → propene(g) at...

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Solution: For the reaction Cyclopropane (g) → propene(g) at 500°C, a plot of ln [cyclopropane] vs. t gives a straight line with a slope of -0.00067 s-1. What is the order of this reaction and what is the rate constant? 1. second order; 6.7 M-1 • s-1 2. second order; 6.7 x 10-4 M-1 • s-1 3. first order; 6.7 s-1 4. None of these 5. first order; 6.7 x 10-2 s-1 6. first order; 6.7 x 10-4 s-1 7. second order; 6.7 x 10-2 M-1  • s-1

Problem

For the reaction
Cyclopropane (g) → propene(g)

at 500°C, a plot of ln [cyclopropane] vs. t gives a straight line with a slope of -0.00067 s-1. What is the order of this reaction and what is the rate constant?

1. second order; 6.7 M-1 • s-1
2. second order; 6.7 x 10-4 M-1 • s-1
3. first order; 6.7 s-1
4. None of these
5. first order; 6.7 x 10-2 s-1
6. first order; 6.7 x 10-4 s-1
7. second order; 6.7 x 10-2 M-1  • s-1