May/June 2026 Paper 21

2026 · 40 questions · 40 parts · 40 marks

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21Acid Base Properties ReactionsMedium1 mark
Tin(II) oxide, SnO, is amphoteric. Which reactions show that tin(II) oxide is amphoteric?
  1. 1
    4SnO 2SnO + 2Sn
  2. 2
    SnO + 2HCl SnCl + HO
  3. 3
    2SnO + O 2SnO
  4. 4
    SnO + 2NaOH NaSnO + HO