$0.01 \, \text{mole}$ of $H_3PO_x$ is completely neutralized by $0.56 \, \text{g}$ of $KOH$. Hence:

  • A
    $x = 3$ and the given acid is dibasic
  • B
    $x = 2$ and the given acid is monobasic
  • C
    $x = 3$ and the given acid is monobasic
  • D
    $x = 4$ and the given acid forms three series of salts

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