Skip to content- What does an electrochemical cell do?
- A) Converts chemical energy to electrical energy
- B) Converts electrical energy to chemical energy
- C) Converts mechanical energy to chemical energy
- D) Converts thermal energy to electrical energy
- Answer: A) Converts chemical energy to electrical energy
- In which type of electrochemical cell does a redox reaction occur spontaneously?
- A) Electrolytic cell
- B) Galvanic cell
- C) Concentration cell
- D) Fuel cell
- Answer: B) Galvanic cell
- What is the unit of electric potential?
- A) Ampere
- B) Ohm
- C) Volt
- D) Coulomb
- Answer: C) Volt
- Which electrode is the site of reduction in an electrochemical cell?
- A) Anode
- B) Cathode
- C) Battery
- D) Cell
- Answer: B) Cathode
- What is the purpose of the salt bridge in a galvanic cell?
- A) To provide electrical conductivity
- B) To maintain electrical neutrality
- C) To supply electrons
- D) To separate the two electrodes
- Answer: B) To maintain electrical neutrality
- What is the standard electrode potential of a standard hydrogen electrode?
- A) 0 V
- B) 1 V
- C) 2 V
- D) -1 V
- Answer: A) 0 V
- Which electrode in a galvanic cell is oxidized?
- A) Anode
- B) Cathode
- C) Salt bridge
- D) Separator
- Answer: A) Anode
- What is the name of the device that measures the cell potential of an electrochemical cell?
- A) Voltmeter
- B) Ammeter
- C) Ohmmeter
- D) Galvanometer
- Answer: A) Voltmeter
- Which type of reaction occurs at the anode of an electrolytic cell?
- A) Reduction
- B) Oxidation
- C) Neutralization
- D) Precipitation
- Answer: B) Oxidation
- What happens to the electrode potential as the concentration of ions increases in a solution?
- A) It decreases
- B) It remains constant
- C) It increases
- D) It becomes zero
- Answer: C) It increases
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