What volume, in milliliters, of 4.0 M NaOH is needed to prepare 145 mL of 0.15 M NaOH by dilution? A) 3.9 * 10³ mL B) 5.4 mL C) 2.6 *10^-⁴ mL D) 0.18 mL

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Quizplus · Accepted Answer

To find the volume of 4.0 M NaOH needed, use the dilution formula: $C_1V_1 = C_2V_2$. Here, $C_1 = 4.0$ M, $C_2 = 0.15$ M, and $V_2 = 145$ mL. Solving for $V_1$, $V_1 = \frac{C_2V_2}{C_1} = \frac{0.15 \times 145}{4.0} = 5.4375$ mL, which rounds to 5.4 mL.

What Volume, in Milliliters, of 4