Ask Question
14 August, 19:36

Using the example reaction aA + bB → cC + dD write the potential first order and second order rate laws

+2
Answers (1)
  1. 14 August, 21:59
    0
    Given the equation aA + bB → cC + dD, which is an irreversible reaction, the most common rate laws are the product of the concentration of the reactants, each raised to a power.

    This is the the general form of such laws.

    r = K [A]^m * [B]^n

    The order of the reaction is the sum of the exponents: m + n.

    For first order reaction m + n = 1, yields to the next potential laws:

    m = 1, n = 0 = > r = k [A]

    m = 0, n = 1 = > r = k [B]

    m=0.5, n = 0.5 = > r = [A]^0.5 [B]^0.5

    And other combinations where the sum of the exponents are 1.

    For second order reactions, m + n = 2, these are some potential laws:

    m = 1, n = 1 = > r = k[A][B]

    m=0, n = 2 = > r = k[B]^2

    m=2, n = 0 = > r = k[A]^2

    m=1.5, n = 0.5 = > r = k[A]^1.5 [B]^0.5

    As you see there are many potential laws all of them with the form

    r = [A]^m [B]^n, being the order of the reaction m + n
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Using the example reaction aA + bB → cC + dD write the potential first order and second order rate laws ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers