.) At 500 oC, cyclopropane, C3H6, rearranges to form propene. The reaction is first order with a rate constant of 6.7 x 10-4 s-1. If the initial concentration of C3H6 is 0.0500 M, (a) what is the molarity of C3H6 after 30 min

0.015 M

Explanation:

For a first order reaction;

ln[A] =ln[A]o - kt

[A] = final concentration

[A]o =initial concentration

k= rate constant

t= time taken

ln[A] =ln[A]o - kt

ln[A] = ln(0.0500) - 6.7 x 10-4 (30 × 60)

ln[A] = -2.9957 - 1.206

ln[A] = -4.202

e^ln[A] = e^(-4.202)

A= 0.015 M

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