Molarity and Dilution Concepts

Molarity and Dilution Concepts

Assessment

Interactive Video

Chemistry

9th - 12th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains molarity as a concentration unit in chemistry, detailing how it measures the moles of solute per liter of solution. It provides examples of preparing molar solutions, calculating molarity with different volumes, and performing dilution calculations. The tutorial emphasizes the importance of unit conversion and significant figures in these calculations, and concludes with a practical problem involving dilution of hydrochloric acid.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does molarity measure in a solution?

The mass of solute per liter of solvent

The volume of solute per liter of solution

The moles of solute per liter of solution

The concentration of solvent in the solution

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

To prepare a 1.0 molar solution of sodium chloride, what is the first step?

Add 1 liter of water to sodium chloride

Calculate the mass of one mole of sodium chloride

Measure 1 liter of sodium chloride

Mix sodium chloride with 1 liter of solvent

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you convert 250 milliliters to liters?

Subtract 1000

Add 1000

Divide by 1000

Multiply by 1000

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molarity of a solution with 0.35 moles of solute in 0.25 liters of solution?

1.4 M

0.35 M

3.5 M

0.14 M

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you have 35 milliliters of an 8.5 molar magnesium chloride solution, how many moles of magnesium chloride are present?

0.85 moles

0.35 moles

0.03 moles

0.297 moles

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of rearranging the molarity equation?

To determine the temperature of the solution

To calculate the pressure of the solution

To solve for moles or volume

To find the density of the solution

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a dilution in chemistry?

Adding solute to increase concentration

Removing solvent to increase concentration

Adding solvent to decrease concentration

Removing solute to decrease concentration

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?