How many grams of $CaC_2O_4$ will dissolve in distilled water to make one litre of saturated solution (in $g$)? (Solubility product of $CaC_2O_4$ is $2.5 \times 10^{-9} \ mol^2 \ L^{-2}$ and its molecular weight is $128$)

  • A
    $0.0064$
  • B
    $0.0128$
  • C
    $0.0032$
  • D
    $0.0640$

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