Chemical Kinetics

For the non-stoichiometric reaction 2A + B → C + D, the following kinetic data were obtained in three separate experiments, all at 298 K.

 

The rate law for the formation of C is

  1. dc/dt = k[A]2[B]
  2. dc/dt = k[A]
  3. dc/dt = k[A][B]
  4. dc/dt = k[A][B]2

Answer

R = k[A]x[B]y

1.2 x 10-3 = k[0.1]x[0.1]y

1.2 x 10-3 = k[0.1]x[0.2]y

2.4 x 10-3 = k[0.2]x[0.1]y

Solving, x = 1, y = 0

R = k[A]

The correct option is B.