• 2022-07-23
    欲配制pH = 9.00的缓冲溶液最好选用()
    A: NH3·H2O-NH4Cl(NH4+的pKaθ=9.25 )
    B: NaHCO3-Na2CO3(HCO3-的pKaθ=6.35 )
    C: NaH2PO4-Na2HPO4(H2PO4-的pKaθ=7.20)
    D: HCOONa-HCOOH(HCOOH的pKaθ=3.74 )