Chapter 7- Electrochemistry

Electrochemistry

Quiz

 

1. What is electrochemistry?
   1.   The study of chemical reactions
   2.   The study of the relationship between electricity and chemical reactions
   3.   The study of physical changes in matter
   4.   The study of the properties of gases
2. 
   Which of the following is an example of an electrochemical cell?
   
   1.   Electrolytic cell
   2.   Voltaic cell
   3.   Both a and b
   4.   None of the above
3. In an electrochemical cell, oxidation occurs at the:
   1.   Cathode
   2.   Anode
   3.   Salt bridge
   4.   Electrolyte
4. In an electrochemical cell, reduction occurs at the:
   1.   Cathode
   2.   Anode
   3.   Salt bridge
   4.   Electrolyte
5. 
   Which of the following is true for a voltaic cell?
   
   1.   It converts chemical energy into electrical energy.
   2.   It converts electrical energy into chemical energy.
   3.   It requires an external power source to operate.
   4.   It does not involve any redox reactions.
6. What is the purpose of a salt bridge in a voltaic cell?
   1.   To provide a surface for the reaction to occur
   2.   To allow the flow of electrons between the two half-cells
   3.   To maintain electrical neutrality by allowing ions to move between the two half-cells
   4.   To store the generated electrical energy
7. Which of the following is a primary cell?
   
   1.   Lead-acid battery
   2.   Nickel-cadmium battery
   3.   Alkaline battery
   4.   Lithium-ion battery
8. In an electrolytic cell, the direction of electron flow is:
   
   1.   From anode to cathode
   2.   From cathode to anode
   3.   From positive electrode to negative electrode
   4.   Randomly within the electrolyte
9. Which process occurs at the cathode during electrolysis?
   1.   Oxidation
   2.   Reduction
   3.   Neutralization
   4.   Precipitation
10. Which of the following is a use of electrolysis?
    1.   Electroplating
    2.   Purification of metals
    3.   Production of chemicals like chlorine and sodium hydroxide
    4.   All of the above