(来学网)古蔡法检查砷盐时,砷斑的组分为
  • A.
    (来学网)AsH3↑
  • B.
    (来学网)HgBr2
  • C.
    (来学网)KI
  • D.
    (来学网)SnCl2
  • E.
    (来学网)AsH(HgBr)2或As(HgBr)3
正确答案:
E