What is the rate law expression for a reaction with the rate equation rate = k[A

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Question: What is the rate law expression for a reaction with the rate equation rate = k[A]^2[B]?

Options:

Correct Answer: rate = k[A]^2[B]

Solution:

The rate law expression is derived directly from the rate equation, which is given as rate = k[A]^2[B].

What is the rate law expression for a reaction with the rate equation rate = k[A]^2[B]?

What is the rate law expression for a reaction with the rate equation rate = k[A]^2[B]?

Step 1: Identify the rate equation given, which is rate = k[A]^2[B].
Step 2: Recognize that the rate law expression shows how the rate depends on the concentration of reactants.
Step 3: In the rate equation, 'k' is the rate constant, '[A]' is the concentration of reactant A, and '[B]' is the concentration of reactant B.
Step 4: The exponent of '[A]' is 2, which means the rate is proportional to the square of the concentration of A.
Step 5: The exponent of '[B]' is 1, which means the rate is directly proportional to the concentration of B.
Step 6: Combine these observations to write the rate law expression as: rate = k[A]^2[B].

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