Answer
Mg has a higher $E^{\circ}_{red}$ value (-2.37) as compared to many other metals, which are right of it in the periodic table such as Iron and Zinc. Hence pipes can be made or iron or zinc.
Work Step by Step
Given above
Chemistry: The Central Science (13th Edition)
by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.
Published by
Prentice Hall
ISBN 10:
0321910419
ISBN 13:
978-0-32191-041-7
Chapter 20 - Electrochemistry - Exercises - Page 905: 20.85b
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