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12 December, 15:10

The most concentrated solution from among those listed is: A. 150 mL 0.18M NaOH. B. 75 mL 0.23M KNO3. C. 200 mL 0.15M NaNO3. D. 100 mL 0.25M KCl.

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  1. 12 December, 16:51
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    The most concentrated solution is the one with the highest molarity. Molarity is calculated by taking the moles of solute / liters of solution.

    The already gave you the molarity, so you do not need to calculate it. The most concentrated solution is the 0.25 M KCl. Keep in mind that the volume they gave you does not effect the molarity of the solution. It just tells us that they have 100 mL of a 0.25 M KCl solution. The 100 mL solution has a molarity of 0.25.

    Your correct answer would be D) 100 mL 0.25 M KCl.
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