Answer
$174\ mL$
Work Step by Step
Number of moles of the AgBr:
$0.225\ g\div 187.77\ g/mol=1.20\ mmol$
From stoichiometry:
$2.40\ mmol$ of sodium thiosulfate
Volume required:
$2.40\ mmol\div 0.0138\ M=174\ mL$
Chemistry and Chemical Reactivity (9th Edition)
by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.
Published by
Cengage Learning
ISBN 10:
1133949649
ISBN 13:
978-1-13394-964-0
Chapter 4 Stoichiometry: Quantitative Information about Chemical Reactions - Study Questions - Page 179e: 65
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