Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 3 - Chemical Reactions and Reaction Stoichiometry - Exercises - Page 115: 3.37b

Answer

$0.005738$ mol

Work Step by Step

Aluminum chloride has a molar mass of 133.33. Therefore .2550g of AlCl3 corresponds to $.2550/133.33=.001913$ mol AlCl3. Since there are three moles of chloride atoms for every one mole of AlCl3, the number of moles of cholride ions is $.001913*3=.005738$ mol
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