Final answer:
A sacrificial anode made of lithium metal would be a bad choice due to its high reactivity and the need for frequent replacement.
Step-by-step explanation:
A sacrificial anode made of lithium metal would be a bad choice because of its high reactivity.
Lithium has a low standard reduction potential, which means it has a high tendency to undergo spontaneous reactions with substances around it.
This reactivity would cause the sacrificial anode to react quickly with other substances, depleting it rapidly and requiring frequent replacement.
In addition, lithium is a metal and can effectively serve as a sacrificial anode, but its high reactivity makes it a less practical choice compared to other metals