Other questions in this quiz

2. solutions with excess NH3

  • Cu2+,Cr3+,Ni2+
  • Cu2+,Cr3+,Ni2+,ZN2+
  • Cu2+,Fe2+,Cr3+,Ni2+,ZN2+

3. Cr(metal aqua ion, then adding OH- or NH3, excess OH-, excess NH3)

  • Violet/Green-->green ppt-->green solution-->green solution
  • Violet/Green-->green ppt-->green ppt-->purple solution
  • Violet/Green-->green ppt-->green solution-->purple solution
  • Violet/Green-->green ppt-->green ppt-->green solution

4. [Cr(H2O)6] + excess NH3

  • Brown precipitate
  • Purple solution
  • Green precipitate
  • Green solution

5. solutions with excess OH-

  • Cr3+,Fe2+
  • Cr3+, ZN2+
  • Cr3+,Ni2+
  • Cr3+,Mn2+

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