1. What is the effect of increasing the temperature on the equilibrium constant for an endothermic reaction?
    • A) The equilibrium constant decreases
    • B) The equilibrium constant remains the same
    • C) The equilibrium constant increases
    • D) The equilibrium constant fluctuates
    • Answer: C) The equilibrium constant increases
  2. In a galvanic cell, if the cell potential is positive, what can be said about the cell’s spontaneity?
    • A) The cell reaction is non-spontaneous
    • B) The cell reaction is at equilibrium
    • C) The cell reaction is spontaneous
    • D) The cell reaction is impossible
    • Answer: C) The cell reaction is spontaneous
  3. What is the standard cell potential for a cell composed of a zinc electrode and a copper electrode in their standard states?
    • A) 0.34 V
    • B) 1.10 V
    • C) 2.00 V
    • D) -1.10 V
    • Answer: B) 1.10 V
  4. The standard reduction potential of which element is defined as zero volts?
    • A) Chlorine
    • B) Hydrogen
    • C) Sodium
    • D) Silver
    • Answer: B) Hydrogen
  5. What is the main difference between a galvanic cell and an electrolytic cell?
    • A) The type of reaction occurring
    • B) The direction of electron flow
    • C) The presence of a salt bridge
    • D) The type of electrolyte used
    • Answer: A) The type of reaction occurring
  6. In an electrochemical cell, which electrode undergoes reduction?
    • A) Anode
    • B) Cathode
    • C) Salt bridge
    • D) Electrode compartment
    • Answer: B) Cathode
  7. What happens to the cell potential of a galvanic cell as the concentration of reactants increases?
    • A) It decreases
    • B) It remains constant
    • C) It increases
    • D) It becomes zero
    • Answer: C) It increases
  8. What is the effect of increasing the concentration of reactants on the cell potential, according to the Nernst equation?
    • A) The cell potential decreases
    • B) The cell potential remains constant
    • C) The cell potential increases
    • D) The cell potential fluctuates
    • Answer: C) The cell potential increases
  9. Which electrode in a galvanic cell is considered the positive electrode?
    • A) Anode
    • B) Cathode
    • C) Salt bridge
    • D) Both electrodes
    • Answer: B) Cathode
  10. What is the standard electrode potential for the reduction of oxygen gas in acidic solution?
    • A) +1.23 V
    • B) +0.76 V
    • C) -0.34 V
    • D) +0.80 V
    • Answer: A) +1.23 V
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