Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter14: Mixtures And Solutions
Section14.2: Solution Concentration
Problem 17PP
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Question
What is the molality of a 1.10 M NaF solution with a density of 1.23 g/mL?
1.10 m |
||
5.85 m |
||
0.894 m |
||
2.34 m |
||
0.929 m |
Expert Solution
Step 1
The mole of solute present in one kilogram of the solvent is known as molality. The mole of solute present in a one-liter solvent is known as molarity. The relation between molality and molarity is as follows:
Where m= molarity of the solution = 1.10 M
d = density of the solution = 1.23 g/mL
m = molality of the solution =?
mB = molar mass of solute
We know that the molar mass of NaF is = 41.988 g/mol
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