(来学网)用0.1000MHCOOH滴定0.1000MNaOH,其突跃范围为pH=6.74~9.70,此时选用下列哪种指示剂最好
  • A.
    (来学网)酚酞(变色范围:无色8.0~9.6红)
  • B.
    (来学网)酚红(黄6.7~8.4红)
  • C.
    (来学网)中性红(红6.8~8.0黄橙)
  • D.
    (来学网)甲基红(红4.4~6.2黄)
  • E.
    (来学网)百里酚酞(无9.4~10.6蓝)