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Magnesium ribbon was added to each of the following aqueous solution in turn: H2SO4, AgNO3,…

Magnesium ribbon was added to each of the following aqueous solution in turn: H2SO4, AgNO3, HNO3, HCl, NH3, HCl, NH3. In which case does the magnesium become covered with a dark precipitate?
  • A.
    H2SO4
  • B.
    AgNO3
  • C.
    HNO3
  • D.
    NH3
  • E.
    HCl
Correct Answer: Option B
Explanation