Question

For the reaction:
2A + B → A2B
the rate = k[A][B]² with k = 2.0 × 10⁻⁶ mol−² L² s−^1. Calculate the initial rate of the reaction
when [A] = 0.1 mol L−^1, [B] = 0.2 mol L−^1. Calculate the rate of reaction after [A] is
reduced to 0.06 mol L−¹.

Answer 1

The initial rate of the reaction is
Rate = k [A][B]²
= (2.0 × 10⁻⁶ mol−² L2 s−¹) (0.1 mol L⁻¹) (0.2 mol L−1)²
= 8.0 × 10⁻⁹ mol−² L2 s⁻¹