$A$ gas is collected over water at $25^{\circ}C$. The total pressure of the moist gas was $735 \, mm$ of mercury. If the aqueous vapour pressure at $25^{\circ}C$ is $23.8 \, mm$,then the pressure of the dry gas is..... $mm$.

  • A
    $760$
  • B
    $758.8$
  • C
    $710.8$
  • D
    $711.2$

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