d and f BLOCK ELEMENTS Quiz

• Its bright color
• Its low cost
• Its high purity and stability
• Its strong smell

• It acts as an oxidizing agent
• It acts as a reducing agent
• It is reduced
• It remains unchanged

• Cr2O7^2- + 2 OH- -> 2 CrO4^2- + H2O
• CrO4^2- + H2O -> Cr2O7^2- + H2
• 2 CrO4^2- + 2H+ -> Cr2O7^2- + H2O
• Cr2O7^2- -> 2 CrO4^2- + H2

• +3
• +6
• +7
• 0

• The equilibrium would shift to form more chromate (CrO4^2-)
• The equilibrium position would remain unchanged
• The equilibrium would shift to form more dichromate (Cr2O7^2-)
• It is impossible to determine