What is the mole fraction of sodium chloride in solution that is 13.0% by mass sodium chloride and that has a density of 1.10 g/mL?
The mole fraction of a substance in a mixture/solution describes how much of a substance is present when compared to the whole mixture/solution. Often we are given mass of a solute and volume of the solution. To work with these given units, we will need the molar masses of solute and solvent and the density of the solution.
Answer and Explanation: 1
Assuming an aqueous solution of which water is the solvent, for every 100 g solution, we have 13.0 g of sodium chloride (NaCl) and 87.0 g water.
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fromChapter 4 / Lesson 8
Learn how to convert grams to moles and moles to grams, including the formula to convert grams to moles. See examples of how to find moles from grams.