Question

If the rate law for the reaction A ⟶Products is rate = k[A], calculate the value of k from the following data: 

[A] (M)           Initial Rate (M/s)

     0.10           0.015

 

67 s-1

0.15 s-1

0.015 s-1

6.7 s-1

Answer 1

The rate constant k = 0.15 s⁻¹.

r = k[A]

0.015 mol·L⁻¹s⁻¹ = k × 0.10 moL

k = (0.015 mol·L⁻¹s⁻¹)/(0.10 mol) = 0.15 s⁻¹