Concentration and Molarity Quiz

What term is used to describe a solution where no more solute can be dissolved?

• Dilute

• Unsaturated

• Concentrated

• Saturated

Which unit of concentration is equivalent to moles per liter?

• Micrograms per gram

• Grams per liter

• Parts per million

• Molarity

How many parts per million is equivalent to 1 gram per liter?

• 100 PPM

• 1000 PPM

• 1,000,000 PPM

• 10,000 PPM

If a solution has a concentration of 2 grams per liter, what is its concentration in PPM?

• 200,000 PPM

• 200 PPM

• 2000 PPM

• 20,000 PPM

What is the molarity of a solution with 0.2 moles of solute in 0.5 liters of solution?

• 0.5 M

• 0.4 M

• 0.2 M

• 0.1 M

How many moles of sodium carbonate are in 100 mL of a 2 M solution?

• 0.002 moles

• 0.2 moles

• 2 moles

• 0.02 moles

To prepare a 0.1 M solution of sodium hydrogen carbonate in 250 mL, how many moles are needed?

• 0.00025 moles

• 0.0025 moles

• 0.25 moles

• 0.025 moles

What is the first step in preparing a diluted solution from a standard solution?

• Add more solute

• Remove some solvent

• Take a specific volume of the standard solution

• Heat the solution

How many milliliters of a 0.1 M solution are needed to make 100 mL of a 0.025 M solution?

• 50 mL

• 75 mL

• 25 mL

• 10 mL

What is the final step in preparing a diluted solution?

• Heat the solution

• Add solvent to reach desired volume

• Stir the solution

• Add solute