Dilution and Molarity Concepts

What is the definition of molarity (M) in chemistry?

• Grams of solute per liter of solvent

• Moles of solute per liter of solvent

• Moles of solute per gram of solvent

• Grams of solute per gram of solvent

What is the process of dilution in chemistry?

• Adding more solute to a solution to increase its concentration.

• Removing solvent from a solution to increase its concentration.

• Adding solvent to a solution to decrease its concentration.

• Heating a solution to increase the solubility of the solute.

What is the molarity of a solution prepared by dissolving 86.5 g of Ca(OH)₂ in 200.0 mL of water? (Molar mass of Ca(OH)₂ is 74.1 g/mol)

• 1.17 M

• 0.43 M

• 5.85 M

• 0.17 M

A 5.85 M solution of Ca(OH)₂ has a volume of 0.200 L. To what volume must this solution be diluted to achieve a final concentration of 1.95 M?

• 0.200 L

• 0.333 L

• 0.600 L

• 1.17 L