Understanding Dilution and Molarity

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

• The concentration decreases.

• The concentration increases.

• The concentration doubles.

• The concentration remains the same.

In the equation Ma * Va = Mb * Vb, what does Va represent?

• The molarity of the final solution

• The molarity of the initial solution

• The volume of the initial solution

• The volume of the final solution

If you add 25 mL of water to a 125 mL solution of 0.15 M NaOH, what is the molarity of the new solution?

• 0.175 M

• 0.150 M

• 0.125 M

• 0.100 M

What is the final volume required to dilute a 250 mL solution of 10 M HCl to 0.05 M?

• 25,000 mL

• 500 mL

• 50,000 mL

• 5,000 mL

What is the relationship between molarity and volume in a solution?

• Exponential relationship

• Direct relationship

• Inverse relationship

• No relationship