• 2022-06-05
    欲配制pH=5.0缓冲溶液,应选用的缓冲对是
    A: HCOOH-HCOONa pKaθ(HCOOH)=3.74
    B: HAc-NaAc pKaθ(HAc)=4.74
    C: H3BO3-NaH2BO3 pKaθ(H3BO3)=9.24
    D: NH3-NH4Cl pKbθ(NH3)=4.74