(来学网)用氟离子选择电极法测得某溶液E=290mV,相应的氟离子浓度为2.31mg/L,已知其E与logC的斜率为59mV,测得另一溶液的E=231mV,其相应的氟离子浓度为
  • A.
    (来学网)5.9mg/L
  • B.
    (来学网)290mg/L
  • C.
    (来学网)231mg/L
  • D.
    (来学网)2.31mg/L
  • E.
    (来学网)23.lmg/L