Molarity (concentration) and Dilutions

What is the molarity/concentration of a solution if a volume of 2 liters of a 3 M solution is diluted to a final volume of 6 liters? [Use M₂ = M₁V₁/V₂]

• 1 M

• 0.5 M

• 2 M

• 1.5 M

If 50 mL of a 0.1 M NaCl solution is diluted to 200 mL, what is the new concentration? [Use M₂ = M₁V₁/V₂]

• 0.025 M

• 0.05 M

• 0.1 M

• 0.2 M

In a titration, 25 mL of 0.1 M HCl is required to neutralize 50 mL of NaOH solution. What is the concentration of the NaOH solution? [Use M₂ = M₁V₁/V₂]

• 0.05 M

• 0.1 M

• 0.2 M

• 0.25 M

Which of the following equations represents the dilution principle?

Which of the following equations is correct for finding M₁?

• M₁ = V₁/M₂V₂

• M₁ = M₂V₂/V₁

• M₁ = M₂V₁/V₂

• M₁ = V₁V₂/M₂

Which of the following equations is correct for finding M₂?

• M₂ = V₁/M₁V₂

• M₂ = M₁V₂/V₁

• M₂ = M₁V₁/V₂

• M₂ = V₁V₂/M₁

Which of the following equations is correct for finding V₂?

• V₂ = V₁/M₁M₂

• V₂ = M₁M₂/V₁

• V₂ = M₁V₁/M₂

• V₂ = V₁M₂/M₁

Which of the following equations is correct for finding V₁?

• V₁ = V₂/M₁M₂

• V₁ = M₁M₂/V₂

• V₁ = M₁V₂/M₂

• V₁ = V₂M₂/M₁

A 5 M solution is diluted to make 500 mL of a 1 M solution. What was the initial volume of the solution? [Use V₁ = M₂V₂/M₁]

• 100 mL

• 200 mL

• 300 mL

• 400 mL

What is the molarity of a solution prepared by diluting 10 mL of 6 M HCl to a final volume of 60 mL? [Use M₂ = M₁V₁/V₂]

• 0.5 M

• 1 M

• 2 M

• 3 M