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12. Which of the following statements is correct with respect to an inert electrode? a. An inert electrode will gain mass. b. An inert electrode will lose mass. c. The mass of an inert electrode will always remain constant. d. An inert electrode will either lose mass or gain mass, depending on the other half-cell reaction. e. All galvanic cells require the use of an inert electrode. 13. Which statement best describes the difference between a galvanic cell and a battery? a. A battery is a set of galvanic cells connected in series to each other. b. A battery is a set of galvanic cells connected in parallel to each other. c. A galvanic cell is a set of batteries connected in series to each other. d. A galvanic cell is a set of batteries connected in parallel to each other. e. There is no difference between the two terms. 14. In cathodic protection what happens to the metal that is the sacrificial anode? a. It is oxidized. b. It is reduced. c. It is either oxidized or reduced, based on the metal it is designed to protect. d. It is neither oxidized nor reduced; it just coats the metal it is designed to protect. e. It is oxidized and reduced at the same time. Answer the questions below. 15. A D-size dry cell flashlight battery is much bigger than a AAA-size dry cell calculator battery, as shown in the photograph below. However,both batteries have cell potentials of 1.5 V. Do the two batteries supply the same amount of charge?Explain your answer.

Question

12. Which of the following statements is correct with respect to an inert electrode? a. An inert electrode will gain mass. b. An inert electrode will lose mass. c. The mass of an inert electrode will always remain constant. d. An inert electrode will either lose mass or gain mass, depending on the other half-cell reaction. e. All galvanic cells require the use of an inert electrode. 13. Which statement best describes the difference between a galvanic cell and a battery? a. A battery is a set of galvanic cells connected in series to each other. b. A battery is a set of galvanic cells connected in parallel to each other. c. A galvanic cell is a set of batteries connected in series to each other. d. A galvanic cell is a set of batteries connected in parallel to each other. e. There is no difference between the two terms. 14. In cathodic protection what happens to the metal that is the sacrificial anode? a. It is oxidized. b. It is reduced. c. It is either oxidized or reduced, based on the metal it is designed to protect. d. It is neither oxidized nor reduced; it just coats the metal it is designed to protect. e. It is oxidized and reduced at the same time. Answer the questions below. 15. A D-size dry cell flashlight battery is much bigger than a AAA-size dry cell calculator battery, as shown in the photograph below. However,both batteries have cell potentials of 1.5 V. Do the two batteries supply the same amount of charge?Explain your answer.

12. Which of the following statements is correct with respect to an inert electrode? a. An inert electrode will gain mass. b. An inert electrode will lose mass. c. The mass of an inert electrode will always remain constant. d. An inert electrode will either lose mass or gain mass, depending on the other half-cell reaction. e. All galvanic cells require the use of an inert electrode. 13. Which statement best describes the difference between a galvanic cell and a battery? a. A battery is a set of galvanic cells connected in series to each other. b. A battery is a set of galvanic cells connected in parallel to each other. c. A galvanic cell is a set of batteries connected in series to each other. d. A galvanic cell is a set of batteries connected in parallel to each other. e. There is no difference between the two terms. 14. In cathodic protection what happens to the metal that is the sacrificial anode? a. It is oxidized. b. It is reduced. c. It is either oxidized or reduced, based on the metal it is designed to protect. d. It is neither oxidized nor reduced; it just coats the metal it is designed to protect. e. It is oxidized and reduced at the same time. Answer the questions below. 15. A D-size dry cell flashlight battery is much bigger than a AAA-size dry cell calculator battery, as shown in the photograph below. However,both batteries have cell potentials of 1.5 V. Do the two batteries supply the same amount of charge?Explain your answer.

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12. **c. The mass of an inert electrode will always remain constant.**<br /><br />Inert electrodes, like platinum or graphite, serve as a surface for the redox reaction to occur but do *not* participate in the reaction themselves. They don't gain or lose atoms.<br /><br />13. **a. A battery is a set of galvanic cells connected in series to each other.**<br /><br />Connecting galvanic cells in series increases the overall voltage of the battery. A single galvanic cell is sometimes referred to as a battery, but technically, a battery is composed of multiple cells.<br /><br />14. **a. It is oxidized.**<br /><br />The sacrificial anode in cathodic protection is designed to be more easily oxidized than the metal it's protecting. It corrodes (oxidizes) preferentially, supplying electrons to the protected metal and preventing its oxidation.<br /><br />15. **No, the two batteries do not supply the same amount of charge.**<br /><br />While both batteries have the same voltage (potential difference), the D-size battery can supply a significantly *greater amount of charge* than the AAA-size battery. Think of it like two water tanks at the same height (voltage). The larger tank (D-size battery) holds more water (charge) than the smaller tank (AAA-size battery). The larger size of the D-size battery allows for more reactant materials, meaning it can sustain a current for a longer period and deliver more total charge before being depleted.<br />
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