For a chemical reaction:

A + B → Products

What is the overall order of the reaction?

1

For a chemical reaction:

A + B → Products

Rate = k [A]^x [B]^y

2.0 x 10^-3 = k [0.1]^x [0.1]^y ....(i)

4.0 x 10^-3 = k [0.2]^x [0.2]^y  ....(ii)

2.0 x 10^-3 = k [0.1]^x [0.2]^y   .....(iii)

Dividing (ii) by (iii), we get

\(\frac{4.0 × 10^{-3}}{2.0 × 10^{-3}}\) = 2^x

2¹ = 2^x

x = 1

Dividing (iii) by (i), we get

\(\frac{2.0 × 10^{-3}}{2.0 × 10^{-3}}\) = 2^y

2⁰ = 2^y 

y = 0

Rate = k [A]¹ [B]⁰ 

Overall order = 1 + 0 = 1