Question

A reaction has the rate law rate ＝ k[A][B].

Calculate the rate constant k if:

[A] ＝ 0.15 mol L-1

[B] ＝ 0.20 mol L-1

rate ＝ 3.11 x 10-2 mol L-1 s-1

Answer 1

r = k[A][B]

k = r / ([A][B]) = 3.11 × 10^-2 mol×L^-1×s^-1 / (0.15 mol×L^-1 × 0.20 mol×L^-1) = 1.0367 L×mol^-1×s^-1 ≈ 1.04 L×mol^-1×s^-1.