Practice question
Question
A 0.25 M NaOH solution is diluted by adding 300 mL of water to 200 mL of the original solution. What is the final molarity?
Explanation
M₁V₁ = M₂V₂. 0.25 × 200 = M₂ × (200 + 300). M₂ = (0.25 × 200)/500 = 0.1 M.
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