Chapter 13: Q13.66 P (page 548)

What is the molality of a solution consisting of 44.0 mL of benzene ( $C_{6} H_{6}$ ; d = 0.877 g/mL) in 167 mL of hexane (data-custom-editor="chemistry" $C_{6} H_{14}$ ; d = 0.660 g/mL)?

Short Answer

Expert verified

The molality of the solution is 4.4 m.

Step by step solution

Concentration of the Solution

Solution can be formed from the dissolution of the solute in the solvent. The solute decides the nature of the solution.

Molality can be defined as the ratio of the mass of the solute to the mass of the solution present in kilogram measure.

$Molality = \frac{Number of Moles of solute}{Mass of the Solvent (in kilogram)}$

Number of moles can be defined as the ratio of the mass of the atom/molecule and molar mass of the atom/molecule.

$Number of Moles = \frac{Mass}{Molar Mass}$

Density can be defined as the ratio of the mass of the matter to the volume of the matter.

$Density = \frac{Mass}{Volume}$

Expression to calculate the Concentration

a) Volume of benzene $= 44 mL$

Density of the benzene $= 0.877 g / mL$

$Density of Benzene = \frac{Mass}{Volume} 0.877 g / mL = \frac{Mass}{44 mL} Mass = 0.877 g / mL \times 44 mL Mass = 38.6 g$

Mass of Benzene $= 38.6 g$

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What is the molality of a solution consisting of 44.0 mL of benzene ( $C_{6} H_{6}$ ; d = 0.877 g/mL) in 167 mL of hexane (data-custom-editor="chemistry" $C_{6} H_{14}$ ; d = 0.660 g/mL)?

Short Answer

Step by step solution

Concentration of the Solution

Expression to calculate the Concentration

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What is the molality of a solution consisting of 44.0 mL of benzene ( C6H6; d = 0.877 g/mL) in 167 mL of hexane (data-custom-editor="chemistry" C6H14 ; d = 0.660 g/mL)?

Short Answer

Step by step solution

Concentration of the Solution

Expression to calculate the Concentration

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Chemistry Branches

Physical Chemistry

Kinetics

Nuclear Chemistry

Chemical Analysis

Chemical Reactions

Study anywhere. Anytime. Across all devices.

What is the molality of a solution consisting of 44.0 mL of benzene ( $C_{6} H_{6}$ ; d = 0.877 g/mL) in 167 mL of hexane (data-custom-editor="chemistry" $C_{6} H_{14}$ ; d = 0.660 g/mL)?