Question

Which of the following unbalanced reactions are precipitation reactions?

Select all that are True.
  Ba(OH)2(aq) + H2SO4(aq) → BaSO4(s) + H2O(l)
  Br2(l) + Cl2(g) → BrCl(g)
  H2SO4(aq) + KOH(aq) → K2SO4(aq) + H2O(l)
  CuCl2(aq) + AgNO3(aq) → Cu(NO3)2(aq) + AgCl(s)
  CuSO4(aq) + Zn(s) → Cu(s) + ZnSO4(aq)
  H2O2(aq) → H2O(l) + O2(g)

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