Balancing Redox Reactions
Chemistry ⇒ Redox Reactions and Electrochemistry
Balancing Redox Reactions starts at 10 and continues till grade 12.
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Balance the following redox reaction in acidic solution: ClO3- + I- → Cl- + IO3-
Balance the following redox reaction in acidic solution: Cr2O72- + Fe2+ → Cr3+ + Fe3+
Balance the following redox reaction in acidic solution: H2O2 + MnO4- → O2 + Mn2+
Balance the following redox reaction in acidic solution: IO3- + HSO3- → I- + SO42-
In the reaction: 2H2O2 → 2H2O + O2, what is the oxidizing agent?
In the reaction: Zn + Cu2+ → Zn2+ + Cu, which species is oxidized?
Which of the following is reduced in the reaction: 2Al + 3CuSO4 → Al2(SO4)3 + 3Cu?
(1) Al
(2) Cu2+
(3) SO42-
(4) O2
Which of the following is the correct balanced redox reaction for the reaction between H2O2 and Cl2 in basic solution?
(1) H2O2 + Cl2 + 2OH- → 2Cl- + 2H2O + O2
(2) 2H2O2 + Cl2 + 2OH- → 2Cl- + 2H2O + 2O2
(3) H2O2 + Cl2 → 2Cl- + 2O2
(4) 2H2O2 + Cl2 → 2Cl- + 2O2 + 2H2O
Which of the following is NOT a step in the half-reaction method for balancing redox reactions?
(1) Balance atoms other than H and O
(2) Add electrons to balance charge
(3) Add H2O to balance oxygen
(4) Add NaCl to balance sodium and chlorine
Which of the following is reduced in the reaction: 2Al + 3CuSO4 → Al2(SO4)3 + 3Cu?
(1) Al
(2) Cu2+
(3) SO42-
(4) O2
Which of the following is the correct balanced redox reaction for the reaction between Fe2+ and MnO4- in acidic solution?
(1) 5Fe2+ + MnO4- + 8H+ → 5Fe3+ + Mn2+ + 4H2O
(2) 2Fe2+ + MnO4- + 4H+ → 2Fe3+ + Mn2+ + 2H2O
(3) 5Fe2+ + MnO4- + 4H+ → 5Fe3+ + Mn2+ + 2H2O
(4) 2Fe2+ + MnO4- + 8H+ → 2Fe3+ + Mn2+ + 4H2O
Which of the following is the correct balanced redox reaction for the reaction between H2O2 and Cl2 in basic solution?
(1) H2O2 + Cl2 + 2OH- → 2Cl- + 2H2O + O2
(2) 2H2O2 + Cl2 + 2OH- → 2Cl- + 2H2O + 2O2
(3) H2O2 + Cl2 → 2Cl- + 2O2
(4) 2H2O2 + Cl2 → 2Cl- + 2O2 + 2H2O
Fill in the blank: In basic solution, after balancing the redox reaction in acidic medium, _______ ions are added to both sides to neutralize H+ ions.
Fill in the blank: In the half-reaction method, after balancing atoms and charges, the half-reactions are _______ to cancel out electrons.
Fill in the blank: In the half-reaction method, electrons are added to the _______ side of the oxidation half-reaction.
Fill in the blank: The process of losing electrons is called _______.
True or False: In a redox reaction, the oxidizing agent is always reduced.
True or False: In balancing redox reactions in basic solution, you should add H+ ions to balance hydrogen atoms.
True or False: The half-reaction method can be used to balance both ionic and molecular redox reactions.
True or False: The total charge on both sides of a balanced redox equation must be the same.
