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A solution (density = 1.08 g/mL) is prepared by dissolving 76.3 grams of NaI in 545 grams of...

Question:

A solution (density = 1.08 g/mL) is prepared by dissolving 76.3 grams of NaI in 545 grams of water. Determine the following:

a. the mole fraction of NaI
b. the molality of the solution
c. the molarity of the solution

Concentration of a Solution:

The concentration of a solution tells us how much solute is present in the solution. Different units of concentration include molarity, molality, and moles fraction.

  • Mole fraction tells us the moles of solute per mole of solution.
  • Molarity is moles of solute per liter of solution.
  • Molality is moles of solute per kilogram of solvent.

The number of moles can be determined using the formula below:

$$Moles=\frac{Mass}{Molar\,Mass}$$

Answer and Explanation: 1

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In this problem, we are given the following:

  • Mass of solute, NaI = {eq}76.3\,g{/eq}
  • Mass of solvent (water) = {eq}545\,g{/eq}
  • Density of solution =...

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Solute Concentration: Definition & Overview

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Chapter 1 / Lesson 10
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What is a solute? Learn the definition of solute concentrations. See examples of solute concentrations, their formulas, and units used to represent them.


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