JEE Main 2019 Chemistry question
For the reaction, 2A + B → products, when the concentrations of A and B both were doubled, the rate of the reaction increased from 0.3 mol L s to 2.4 mol L s. When the concentration of A alone is doubled, the rate increased from 0.3 mol L s to 0.6 mol L s. Which one of the following statements is correct?
Answer: (D)
Solution
Order in A = 1; total order 3 () ⇒ order in B = 2.