14. Solutions
Mole Fraction
14. Solutions
Mole Fraction - Video Tutorials & Practice Problems
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Mole Fraction (X) relates the moles of solute and solvent within a solution.
Understanding Mole Fraction
1
concept
Mole Fraction Concept 1
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2
example
Mole Fraction Example 1
Video duration:
2mPlay a video:
3
Problem
ProblemCalculate mole fraction of a 2.4 m aqueous solution of citric acid (C6H8O7).
A
0.96
B
0.041
C
0.55
D
0.024
4
Problem
ProblemIf mole fraction of urea is 4.55 x 10-1, what is the mass of urea needed to dissolve in 38.0 g of water? The molar mass of urea is 60.062 g/mol.
A
26.7 g
B
106 g
C
39.6 g
D
8.19 g
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PRACTICE PROBLEMS AND ACTIVITIES (16)
- The density of acetonitrile 1CH3CN2 is 0.786 g>mL and the density of methanol 1CH3OH2 is 0.791 g>mL. A s...
- The density of toluene 1C7H82 is 0.867 g>mL, and the density of thiophene 1C4H4S2 is 1.065 g>mL. A solut...
- Caffeine 1C8H10N4O22 is a stimulant found in coffee and tea. If a solution of caffeine in the solvent chlorofo...
- How would you prepare each of the following solutions? (c) A solution of methyl alcohol (methanol) and water i...
- A solution is prepared by dissolving 20.2 mL of methanol (CH3OH) in 100.0 mL of water at 25 °C. The final volu...
- A solution is prepared by dissolving 20.2 mL of methanol (CH3OH) in 100.0 mL of water at 25 °C. The final volu...
- An aqueous solution contains 36% HCl by mass. Calculate the molality and mole fraction of the solution.
- What is the concentration of each of the following solutions? (b) The mole fraction of each component of a sol...
- Household bleach is a 5.0 mass % aqueous solution of sodium hypochlorite, NaOCl. What is the molality of the b...
- A 0.944 M solution of glucose, C6H12O6, in water has a density of 1.0624 g/mL at 20 °C. What is the concentrat...
- The estimated average concentration of NO2 in air in the United States in 2006 was 0.016 ppm. (a) Calculate th...
- Lactose, C12H22O11, is a naturally occurring sugar found in mammalian milk. A 0.335 M solution of lactose in w...
- Acetonitrile 1CH3CN2 is a polar organic solvent that dissolves a wide range of solutes, including many salts. ...
- Find the mass of urea (CH4N2O) needed to prepare 50.0 g of a solution in water in which the mole fraction of u...
- A solution is prepared by dissolving 38.6 g sucrose (C12H22O11) in 495 g of water. Determine the mole fraction...
- A solution is prepared by dissolving 38.6 g sucrose (C12H22O11) in 495 g of water. Determine the mole fraction...