SOLUTION CONCENTRATION

1. How many grams of NaCl are dissolved in 500.0 mL of a 0.05M solution of NaCl?

		a.	0.05 g
		b.	0.29 g
		c.	1.46 g
		d.	2.92 g
	Hint

	2.	A solution that contains less solute per volume of solvent than another solution made from the same components is said to be more ________.

		a.	dilute
		b.	concentrated
		c.	solvated
		d.	dissolved
	Hint

	3.	Molarity is defined as the ____________.

		a.	mass of solute per mass of solution
		b.	volume of solute per volume of solution
		c.	moles of solute per liter of solution
		d.	moles of solute per kilograms of solvent
	Hint

	4.	What volume of 12.6M HCl must be added to sufficient water to prepare 5.00 liters of 3.00M HCl?

		a.	1.19 L
		b.	21.0 L
		c.	0.840 L
		d.	7.56 L
	Hint

	5.	What mass of Ca(OH)2 is contained in 1500 mL of 0.0250M Ca(OH)2 solution?

		a.	3.17 g
		b.	2.78 g
		c.	1.85 g
		d.	2.34 g
	Hint

	6.	Calculate the molality of a solution that contains 25 g of H2SO4 dissolved in 80 g of water.

		a.	1.6m
		b.	2.2m
		c.	3.2m
		d.	6.3m
	Hint

	7.	Calculate the molality of 10% H3PO4 solution in water.

		a.	0.380m
		b.	0.760m
		c.	1.13m
		d.	1.51m
	Hint

	8.	What is the mole fraction of ethanol (C2H5OH) in a solution of 47.5 g of ethanol in 850 g of water?

		a.	0.021
		b.	0.18
		c.	0.032
		d.	0.98
	Hint

	9.	What is the molarity of 2500 mL of a solution that contains 160 grams of ammonium nitrate (NH4NO3)?

		a.	0.333M
		b.	0.450M
		c.	0.600M
		d.	0.800M

Answers: c a c a b c c a d