Question

What is the rate law if the rate is directly proportional to \([B]^2\) and independent of \([A]\)?

• A. \( \text{Rate} = k[B]^2 \)
• B. \( \text{Rate} = k[A][B]^2 \)
• C. \( \text{Rate} = k[A]^2[B] \)
• D. \( \text{Rate} = k[A]^2[B]^2 \)

Hint:

The rate law expresses the dependence of the reaction rate on the concentrations of reactants. In this case, it is only dependent on \(B\).

Answer 1

The Correct Option is A

In this problem, we are told that the rate is proportional to the square of concentration of \(B\), and independent of the concentration of \(A\). Hence, the rate law is: \[ \text{Rate} = k[B]^2, \] where \(k\) is the rate constant.