Molarity and Dilution

The video tutorial introduces the concept of molarity, which is the concentration of a solute in a solution, measured in moles per liter. It explains how to calculate molarity using the molar mass of a substance and the total volume of the solution. The tutorial also covers the process of dilution, where adding solvent decreases the concentration of a solution. It provides a formula for dilution calculations, showing the inverse relationship between volume and concentration. The video concludes with a comprehension check to reinforce the learning.

What does a 2 molar solution indicate?

• 2 moles of solute per liter of solvent

• 2 moles of solvent per liter of solute

• 2 grams of solute per liter of solvent

• 2 liters of solute per mole of solvent

How do you calculate molarity if you have the grams of solute?

• Add grams to the volume of the solution

• Divide grams by the volume of the solution

• Multiply grams by the molar mass

• Convert grams to moles using molar mass and divide by volume

What is the process of adding solvent to a solution called?

• Concentration

• Evaporation

• Dilution

• Saturation

What happens to the concentration of a solution when the volume is doubled?

• It triples

• It remains the same

• It doubles

• It is halved

Which equation is used for dilution calculations?

• Initial concentration / Initial volume = Final concentration / Final volume

• Initial concentration - Initial volume = Final concentration - Final volume

• Initial concentration + Initial volume = Final concentration + Final volume

• Initial concentration x Initial volume = Final concentration x Final volume