31. What is the function of a potentiostat in an electrochemical cell?
a) To measure the potential difference
b) To control the flow of electrons
c) To measure the current flow
d) To regulate the cell temperature
32. Which of the following is a characteristic of a redox reaction?
a) It involves the transfer of electrons
b) It involves the transfer of protons
c) It produces heat as a byproduct
d) It does not involve any chemical change
33. What is the purpose of a platinum electrode in an electrochemical cell?
a) To complete the circuit
b) To prevent mixing of electrolytes
c) To increase the voltage
d) To catalyze the reaction
34. What is the purpose of a carbon electrode in an electrochemical cell?
a) To complete the circuit
b) To prevent mixing of electrolytes
c) To increase the voltage
d) To catalyze the reaction
35. Which of the following is a characteristic of an anode?
a) It is the site of reduction reaction
b) It is the site of oxidation reaction
c) It is the site of electrolyte solution
d) It is the site of salt bridge
