You pipet 5.00 mL of 3.58x10^(-3) M HCL into a 25.00 mL volumetric flask. What is the molarity of the diluted solution.?

Method 1 :

After distilled water is added to the mark of the 25.00-mL volumetric flask :
Dilution factor = 5.00/25.00 = 1/5
Molarity of the diluted solution = (3.58 × 10⁻³ M) × (1/5) = 7.16 × 10⁻⁴ M


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Method 2 :

After distilled water is added to the mark of the 25.00-mL volumetric flask :
C₁V₁ = C₂V₂
(3.58 × 10⁻³ M) × (5.00 mL) = C₂ × (25.00 mL)
Molarity of the diluted solution = (3.58 × 10⁻³ M) × (5.00/25.00) = 7.16 × 10⁻⁴ M