(2]人当溶液中有两种离子共存时,欲以EDTA溶液演定M而N不受干扰的条件是

(2]人当溶液中有两种离子共存时,欲以EDTA溶液演定M而N不受干扰的条件是
A.K'MY/K'NY≥10(正确答案)
B.K'MY/K'NY≥10-5
C.K'MY/K'NY≤106
D.K'MY/K'NY=108