We have 100 mL of a solution of NaCl with a concentration of 0.5 mol L^-1 and want to dilute it to a concentration of 0.1 mol L^-1. How much water would we need to add to achieve this? A) 0.5 L B) 0.4 L C) 500 L D) 0.005 L E) 0.1 L

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Quizplus · Accepted Answer

To dilute the solution from 0.5 mol/L to 0.1 mol/L, we use the dilution formula: C1V1 = C2V2. Here, C1 = 0.5 mol/L, V1 = 0.1 L, C2 = 0.1 mol/L. Solving for V2 gives V2 = 0.5 L. The amount of water to add is V2 - V1 = 0.5 L - 0.1 L = 0.4 L.

We Have 100 ML of a Solution of NaCl with a Concentration