The rate law for the reaction $A + B \rightarrow \text{product}$ is $\text{rate} = k[A][B]$. When will the rate of reaction increase by a factor of $2$?

  • A
    $[A]$ and $[B]$ both are doubled
  • B
    $[A]$ is doubled and $[B]$ is kept constant
  • C
    $[B]$ is doubled and $[A]$ is halved
  • D
    $[A]$ is kept constant and $[B]$ is halved

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