Chemistry 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078021510
ISBN 13: 978-0-07802-151-0

Chapter 4 - Reactions in Aqueous Solutions - Questions & Problems: 4.65

Answer

Please see the work below.

Work Step by Step

We know that: a. $Mr\space of \space ethanol=46$ $Moles=\frac{29}{46}=0.63moles$ $Molarity=\frac{0.63}{0.15}=4.2$ b. $Mr\space of\space Sucrose=342$ $Moles=\frac{15.4}{342}=0.045 \space moles$ $Molarity=\frac{0.045}{0.074}=0.608$ c. $Mr\space of\space NaCl=58.5$ $Moles=\frac{9}{58.5}=0.153 \space moles$ $Molarity=\frac{0.153}{0.0864}=1.77$
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