Questions

 

  1. Find the oxidation state of Ni in NiO2
  2. Find the oxidation state of U in UO22+
  3. Find the oxidation state of N in Li3N and NO2
  4. State which element is the oxidizing agent and which is the reducing agent in Mn2+ + NaBiO3 ® Bi3+ + MnO4
  5. State which element is being oxidized in CH4 + 2O2 ® CO2 + 2H2O
  6. State which element is being reduced in Zn + 2HCl ®ZnCl2 + H2
  7. What element is the oxidizing agent and what element is the reducing agent in

2CuCl ® CuCl2 + Cu

  1. State which element is being oxidized and which reduced in

2H2O2 ® 2H2O + O2

  1. Write the half-reactions for NO2- + Al ® NH3 + AlO2-
  2. Write the half-reactions for Ag + CN- + O2 ® Ag(CN)2-
  3. Balance this reaction that occurred in acidic solution using the half-reaction method

Br-(aq) + MnO4(aq) ® Br2 (l) + Mn 2+(aq)

  1. Balance this reaction that occurred in basic solution using the half-reaction method

                  Cr(s) + CrO42-(aq)® Cr(OH)3(s)

  1. Balance this reaction that occurred in acidic solution using the half-reaction

Method

                  Cr2O72-(aq) + Cl-(aq) ® Cr3+(aq) + Cl2(g)