Oxidation Numbers in Compounds Quiz

Oxidation Numbers in Compounds

• H₂CO₃ (Carbonic Acid):

  • Oxidation numbers: +1 for H, +4 for C, -2 for O.

• Na₂SO₄ (Sodium Sulfate):

  • Oxidation numbers: +1 for Na, +5 for S, -2 for O.

• S₂O₃ (Thiosulfate):

  • Oxidation numbers: +3 for S, -2 for O.

• CO₃²⁻ (Carbonate Ion):

  • Oxidation numbers: +4 for C, -2 for O.

• NO₃²⁻ (Nitrate Ion):

  • Oxidation numbers: +4 for N, -2 for O.

• N₂O (Dinitrous Oxide):

  • Oxidation numbers: +1 for N, -2 for O.

• P₂O₅ (Phosphorus Pentoxide):

  • Oxidation numbers: +5 for P, -2 for O.

• PO₄³⁻ (Phosphate Ion):

  • Oxidation numbers: +5 for P, -2 for O.

• Cr₂O₇²⁻ (Dichromate Ion):

  • Oxidation numbers: +6 for Cr, -2 for O.

• PF₃ (Phosphorus Trifluoride):

  • Oxidation numbers: +3 for P, -1 for F.

• MnO₄⁻ (Permanganate Ion):

  • Oxidation numbers: +7 for Mn, -2 for O.

• PF₅ (Phosphorus Pentafluoride):

  • Oxidation numbers: +5 for P, -1 for F.

• As₂O₅ (Arsenic Pentoxide):

  • Oxidation numbers: +5 for As, -2 for O.

• SiO₂ (Silicon Dioxide):

  • Oxidation numbers: +4 for Si, -2 for O.

• HNO₂ (Nitrous Acid):

  • Oxidation numbers: +1 for H, +3 for N, -2 for O.

• S₂O₃²⁻ (Thiosulfate Ion):

  • Oxidation numbers: +2 for S, -2 for O.

• CH₄ (Methane):

  • Oxidation numbers: -4 for C, +1 for H.

• C₂O₄²⁻ (Oxalate Ion):

  • Oxidation numbers: +3 for C, -2 for O.

• CF₄ (Carbon Tetrafluoride):

  • Oxidation numbers: +4 for C, -1 for F.

Key Observations

• Oxidation states vary across different compounds and ions, illustrating the diversity of chemical behavior.
• Understanding oxidation numbers is crucial for predicting reactivity and bonding in chemical compounds.