The rate law equation for a reaction is $R = k[x][y]$. The rate of reaction doubles when:

  • A
    concentration of $x$ is kept constant and concentration of $y$ is halved
  • B
    concentration of both $x$ and $y$ is doubled
  • C
    concentration of $x$ is doubled and concentration of $y$ is kept constant
  • D
    concentration of $y$ is doubled and concentration of $x$ is halved

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