Question 1

What is the half-reaction for the oxidation of sulfide ions in aqueous solution?

Accepted Answer

A) S2-(aq)   S(s)+ 2 e- 
B) S-(aq)+ e-   S2-(aq) 
C) S(s)+ 2 e-   S2-(aq) 
D) SO32-(aq)+ 6 H+(aq)   S(s)+ 3 H2O(   )+ 4 e- 
E) SO42-(aq)+ 8 H+(aq)   S(s)+ 4 H2O(   )+ 6 e- 
A) S2-(aq)   S(s)+ 2 e- 
B) S-(aq)+ e-   S2-(aq) 
C) S(s)+ 2 e-   S2-(aq) 
D) SO32-(aq)+ 6 H+(aq)   S(s)+ 3 H2O(   )+ 4 e- 
E) SO42-(aq)+ 8 H+(aq)   S(s)+ 4 H2O(   )+ 6 e-

Question 2

Identify the oxidation half-reaction in the redox equation:
Cu(s)+ Cl2(g)  
Cu2+ + 2 Cl-

Accepted Answer

A) Cl2   2 Cl- + 2 e- 
B) Cl2 + 2 e-   2 Cl- 
C) Cu   Cu2+ + 2 e- 
D) Cu + 2 e-   Cu2+ 
E) Cu + Cl2 + 2 e-   Cu2+ + 2 Cl- + 2 e- 
A) Cl2   2 Cl- + 2 e- 
B) Cl2 + 2 e-   2 Cl- 
C) Cu   Cu2+ + 2 e- 
D) Cu + 2 e-   Cu2+ 
E) Cu + Cl2 + 2 e-   Cu2+ + 2 Cl- + 2 e-

Question 3

Balance the following redox reaction in acidic solution and determine how many water molecules are in the equation.
MnO4- + ClO-  
ClO3- + Mn2+ + H2O

Accepted Answer

A) 8 
B) 2 
C) 6 
D) 5 
E) 4 
A) 8 
B) 2 
C) 6 
D) 5 
E) 4

Question 4

Which of the following statements is correct for an electrolytic cell?

Accepted Answer

A) Electrons flow through the external circuit from the anode to the cathode 
B) The electrode at which oxidation occurs is the cathode 
C) The reaction occurring in the cell can be used to generate an electric current. 
D) Charge is carried through the solution by electrons in one direction and by protons in the other direction 
E) None of the statements above is correct 
A) Electrons flow through the external circuit from the anode to the cathode 
B) The electrode at which oxidation occurs is the cathode 
C) The reaction occurring in the cell can be used to generate an electric current. 
D) Charge is carried through the solution by electrons in one direction and by protons in the other direction 
E) None of the statements above is correct

What is the half-reaction for the oxidation of sulfide ions in aqueous solution?

Identify the oxidation half-reaction in the redox equation: Cu(s)+ Cl₂(g) Cu²⁺ + 2 Cl^-

Balance the following redox reaction in acidic solution and determine how many water molecules are in the equation. MnO₄^- + ClO^- ClO₃^- + Mn²⁺ + H₂O

Which of the following statements is correct for an electrolytic cell?

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: the Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: the Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, liquids, and Solids

Solutions

Acid-Base Proton-Transferreactions

Chemical Equilibrium

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Exam 19: Oxidation-Reduction Redoxreactions

What is the half-reaction for the oxidation of sulfide ions in aqueous solution?

Identify the oxidation half-reaction in the redox equation: Cu(s)+ Cl2(g) Cu2+ + 2 Cl-

Balance the following redox reaction in acidic solution and determine how many water molecules are in the equation. MnO4- + ClO- ClO3- + Mn2+ + H2O

Which of the following statements is correct for an electrolytic cell?

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: the Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: the Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, liquids, and Solids

Solutions

Acid-Base Proton-Transferreactions

Chemical Equilibrium

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Identify the oxidation half-reaction in the redox equation: Cu(s)+ Cl₂(g) Cu²⁺ + 2 Cl^-

Balance the following redox reaction in acidic solution and determine how many water molecules are in the equation. MnO₄^- + ClO^- ClO₃^- + Mn²⁺ + H₂O