Molarity and Concentration

A solution is made by dissolving 0.50 mole of NaCl in enough water to give a final volume of 0.40 L. What is the molarity of the solution?

• 0.10 M

• 0.40 M

• 1.25 M

• 2.33 M

A solution with a low amount of solute

• concentrated

• supersaturated

• saturated

• diluted

Tags

NGSS.HS-PS1-5

Which of the following types of solutions has more room to dissolve solute?

• supersaturated

• saturated

• unsaturated

What is the molarity of a 0.5L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)

• 0.8 M

• 1.5M

• 3.0M

• 6.0M

Which of the following is the correct formula for calculating molarity?

• moles/liters of solution

• moles/kg of solvent

• # particles/Avogadro's #

• theoretical yield/actual yield

The concentration of a mixture can be increased in which of the following ways?

• Heating the mixture

• Adding more water “solvent”

• Adding more powder “solute”

• Stirring the mixture

Tags

NGSS.HS-PS1-5

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?

• 1074 mol

• 0.069 mol

• 1.07 mol

• 62.7 mol

What is the molarity of 4 grams of sodium chloride in 3,800 mL of solution?

• 0.018 M

• 0.018 mol

• 1.052 M

• 1.052 mol

Tags

NGSS.HS-PS1-5

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt

Solution 2:

500 mL of water

90 g of salt

• Solution 1

• Solution 2

• They have the same concentration

• I have no idea

Tags

NGSS.MS-PS1-2

The amount of solute actually dissolved in a given amount of solvent.

• dilution

• concentration

• saturated solution

• supersaturated mixture

Tags

NGSS.HS-PS1-5