Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 21 - Problems: 21.101

Answer

See explanation below.

Work Step by Step

The reaction is: Mg2+ + 2 e- --> Mg a. No of moles of electrons produced is:(35.6 g Mg) (1 mol Mg / 24.31 g Mg) (2 mol e-/ 1 mol Mg) = 2.92883587 = 2.93 mol e- b (2.92883587 mol e-) (96485 C / mol e-) = 2.83 x 105 coulombs c (2.83 x 10^5/ 2.5 hr)(1h/3600 sec)= 31.4 A
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