Understanding Solutions and Molarity

What is a solution in chemistry?

• A homogeneous mixture

• A heterogeneous mixture

• A compound

• A pure substance

In a solution, what is the role of the solvent?

• It is always water

• It does the dissolving

• It is the minority component

• It gets dissolved

What defines an aqueous solution?

• Any solution with a solute

• A solution where water is the solute

• A solution with no solvent

• A solution where water is the solvent

Why are aqueous solutions important in nature?

• They do not conduct electricity

• They are always acidic

• They are involved in many natural reactions

• They are rare in nature

What does a dilute solution mean?

• It is a solid mixture

• It has a high amount of solute

• It has no solvent

• It has a low amount of solute

How is molarity defined?

• Moles of solute per liter of solvent

• Moles of solute per liter of solution

• Liters of solute per mole of solvent

• Liters of solution per mole of solute

What is the first step in preparing a solution of a specified molarity?

• Measure the temperature

• Heat the solution

• Add solute to the flask

• Add solvent to the flask

Why is it important to add solute before solvent when preparing a solution?

• To ensure the solution is heated

• To make the solution more concentrated

• To change the color of the solution

• To avoid exceeding the desired volume

In the example calculation, what is the molarity of a solution with 2.47 moles of HCl in 5 liters?

• 2.47 M

• 1.235 M

• 0.247 M

• 0.494 M

What is the formula for calculating molarity?

• Liters of solution divided by moles of solute

• Liters of solute divided by moles of solvent

• Moles of solute divided by liters of solution

• Moles of solute divided by liters of solvent