27) The following reaction takes place in a lead storage battery. Discharging: P
ID: 843481 • Letter: 2
Question
27) The following reaction takes place in a lead storage battery.
Discharging: Pb(s) + PbO2(s) + 4H+(aq) + 2SO4^2-(aq) -> 2PbSO4(s) + 2H20(l)
Charging: 2PbSO4(s) + 2H2O(l) -> Pb(s) + PbO2(s) 4H+(aq) + 2SO4^2-(aq)
Which of the following statements is true?
A) the concentration of H2SO4 increases as the battery discharges
B) Pb is formed at the anode during discharge
C) Pb is formed at the cathode during charging
D) the Mass of Pb decreases during charging
29) Which of the following is not part of a voltaic cell?
a) salt bridge
b) power strip
C) anode
D) cathode
E) external circuit
30) Which of the following statements about batteries is false?
lead storage batteries contain lead at the anode and lead coated with lead dioxide at the cathode.
It is not safe to recharge a nickel - cadium battery.
A fuel cell is a galvanic cell for which the reactancts are continuously supplied.
Dry cell batteries are used in flashlights and portable radios.
Explanation / Answer
Which of the following statements is true?
C) Pb is formed at the cathode during charging
Which of the following is not part of a voltaic cell?
b) power strip
Which of the following statements about batteries is false?
lead storage batteries contain lead at the anode and lead coated with lead dioxide at the cathode
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