Dilution and Molarity Quiz

What is the formula for calculating molarity?

• m = n/v

• m = v - n

• m = v/n

• m = n * v

In a dilution, what happens to the molarity when the volume increases?

• Molarity stays the same

• Molarity decreases

• Molarity doubles

• Molarity increases

Which equation represents the dilution process?

• m1 + v1 = m2 + v2

• m1 - v1 = m2 - v2

• m1v1 = m2v2

• m1/v1 = m2/v2

What is the first step when diluting a concentrated acid?

• Add acid to water

• Heat the acid before adding water

• Mix acid and water simultaneously

• Add water to acid

Why is it important to use a volumetric flask for dilutions?

• It is cheaper than other glassware

• It provides the best precision

• It is more durable

• It is easier to clean

How do you calculate the final molarity of a solution after dilution?

• Add initial molarity to final volume

• Divide initial molarity by final volume

• Subtract initial volume from final volume

• Multiply initial molarity by initial volume and divide by final volume

What is the final molarity of a solution if 12.5 mL of 2.2 M copper sulfate is diluted to 300 mL?

• 0.091 M

• 0.0917 M

• 0.092 M

• 0.090 M

When making a highly dilute solution, why might multiple dilutions be necessary?

• To avoid using a calculator

• To ensure accuracy and precision

• To save time

• To use less glassware

What is the challenge of measuring 0.633 mL of concentrated acid?

• It is too expensive

• It is difficult to measure accurately

• It reacts too quickly

• It is too volatile

What is the purpose of creating a stock solution in a multi-step dilution process?

• To simplify the dilution process

• To reduce the number of steps

• To decrease the volume needed

• To increase the concentration