• 2022-07-24
    下列混合溶液,哪些具有pH的缓冲能力?()
    A: A100ml1mol•L-1HAc+100ml1mol•L-1NaOH
    B: B100ml1mol•L-1HAc+200ml2mol•L-1NH3•H2O
    C: C200ml1mol•L-1HAc+100ml1mol•L-1NaOH
    D: D100ml1mol•L-1NH4Cl+200ml2mol•L-1NH3•H2O
  • 举一反三