已知H3PO4的pKa1=2.12,pKa2=7.20,pKa3=12.36。0.10mol/LNa2HPO4溶液的pH约为()。A、4.7B、7.3C、10.1D、9.8

已知H3PO4的pKa1=2.12,pKa2=7.20,pKa3=12.36。0.10mol/LNa2HPO4溶液的pH约为()。

  • A、4.7
  • B、7.3
  • C、10.1
  • D、9.8

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