General, Organic, and Biological Chemistry: Structures of Life (5th Edition)

Published by Pearson
ISBN 10: 0321967461
ISBN 13: 978-0-32196-746-6

Chapter 9 - Solutions - 9.4 Solution Concentrations and Reactions - Questions and Problems - Page 347: 9.35

Answer

a. Mass/volume percent(m/v) = $30 \%$ (m/v) $Na_2SO_4$ solution b. Mass/volume percent(m/v) = $11 \%$ (m/v) $sucrose$ solution

Work Step by Step

a. 1. Write the expression for the mass/volume percent: $$Mass/volume \space percent(m/v) = \frac{grams \space of \space solute}{mL \space of \space solution} \times 100\%$$ $$Mass/volume \space percent(m/v) = \frac{ 75 \space g \space Na_2SO_4 }{ 250 \space mL \space Na_2SO_4 \space solution} \times 100\%$$ Mass/volume percent(m/v) = $30 \%$ (m/v) $Na_2SO_4$ solution b. 1. Write the expression for the mass/volume percent: $$Mass/volume \space percent(m/v) = \frac{grams \space of \space solute}{mL \space of \space solution} \times 100\%$$ $$Mass/volume \space percent(m/v) = \frac{ 39 \space g \space sucrose }{ 355 \space mL \space carbonated \space drink} \times 100\%$$ Mass/volume percent(m/v) = $11 \%$ (m/v) $sucrose$ solution
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