Which of the following rate laws has an overall order of $0.5$  for reaction involving substances $x$, $y$ and $z$

  • [AIIMS 1983]
  • A

    Rate $ = K({C_x})\,({C_y})\,({C_z})$

  • B

    Rate $ = K{({C_x})^{0.5}}\,{({C_y})^{0.5}}\,{({C_z})^{0.5}}$

  • C

    Rate $ = K{({C_x})^{1.5}}\,{({C_y})^{ - 1}}{({C_z})^0}$

  • D

    Rate $ = K({C_x})\,{({C_z})^n}/{({C_y})^2}$

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