Free Printable Balancing Redox Reactions

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Balancing Redox Reactions

Total questions: 10

Worksheet time: 28mins

Name

Class

Date

What coefficient would Fe⁺² have in the following reaction?
___ Al + ___ Fe⁺² → ___ Al⁺³ + ___ Fe

Which of the following reactions is balanced by both mass and charge?

Fe⁺² + Al →Fe + Al⁺³

Cu + Fe⁺² → Cu⁺¹ + Fe⁺³

F₂ + Br^- --> F^- + Br₂

Fe⁺² + 2 Cu --> 2 Cu⁺ + Fe

Which of the following is the balanced half -reaction for the oxidation of Cu to Cu^+2?

Cu --> Cu⁺²

Cu + 2 e- --> Cu⁺²

Cu --> Cu⁺²+ 2 e-

Cu - 2e- --> Cu⁺²

What is the reduction half-reaction for the following redox reaction?
Zn + HgO $\longrightarrow$ ZnO + Hg

Zn $\longrightarrow$ Zn2+ 2e–

Hg2+ + 2e– $\longrightarrow$ Hg

Zn + HgO

ZnO + Hg

Which is the correct net ionic equation for the reaction of AgNO₃ and CaCl₂?

Ca²⁺(aq) + 2Cl^- (aq) → CaCl(s)

Ag⁺(aq) + Cl^- (aq) → AgCl(s)

Ag + Cl → AgCl

Ag⁺+ Ca²⁺ →Ag₂Ca (s)

Which of the following half reactions correctly represents a reduction half reaction?

Fe →Fe²⁺+ 2e^-

Pb⁴⁺ + 2e^- →Pb²⁺

2O^-2→O₂ + 4e^-

Fe + 3e^- →Fe³⁺

Balance the following redox equations for reactions that occur in neutral solution:

Zn + Ag+ → Zn²⁺ + Ag

Zn + 2Ag⁺ → Zn²⁺ + 2Ag

Zn + Ag⁺ → Zn²⁺ + Ag

Zn + 2Ag⁺ → Zn²⁺ + Ag

Zn+ Ag⁺ → 2 Zn²⁺+ 2Ag

Balance the following redox equations for reactions that occur in neutral solution:

Fe³⁺ + I⁻ → Fe²⁺+ I_2.:

Fe³⁺ + 2I⁻ → Fe²⁺ + 2I₂

Fe³⁺ + I⁻ → Fe²⁺ + I₂

2Fe³⁺ + I⁻ → 2Fe²⁺ + I₂

2Fe³⁺ + 2I⁻ → 2Fe²⁺ + I₂

Balance the following half-equations for reactions that occur in acidic solution:

BrO₃⁻+ I⁻ → Br₂+ I₂

2BrO₃⁻+ 10I⁻ + 6H⁺ → Br₂ + 5I₂+ 3H₂O

2BrO₃⁻+ 10I⁻ + 12H⁺ → Br₂ + 5I₂+ 6H₂O

BrO₃⁻+ 10I⁻ + 14H⁺ → Br₂ + 5I₂+ 7H₂O

BrO₃⁻+ 5I⁻ + 12H⁺ → Br₂ + 3I₂+ 6H₂O

10.

Explain the concept of adding H+ and H2O to balance redox equations in acidic solutions.

Multiply H+ and H2O to balance the equation in acidic solutions.

Subtract H+ and H2O to balance the equation in acidic solutions.

Divide H+ and H2O to balance the equation in acidic solutions.

Add H+ and H2O to balance the equation in acidic solutions.

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Balancing Redox Reactions

Total questions: 10

Worksheet time: 28mins

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