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13 June, 15:02

what is molarity of a sodium hydroxide solution made by combining 2.0 L of 0.60 M NaOH with 495 mL of 3.0 M NaOH? Assume the volumes of the two solutions to be additive

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  1. 13 June, 16:30
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    Molarity of the sodium hydroxide solution is 1.443 M/L

    Explanation:

    Given;

    0.60 M concentration of NaOH contains 2.0 L

    3.0 M concentration of NaOH contains 495 mL

    Molarity is given as concentration of the solute per liters of the solvent.

    If the volumes of the two solutions are additive, then;

    the total volume of NaOH = 2 L + 0.495 L = 2.495 L

    the total concentration of NaOH = 0.6 M + 3.0 M = 3.6 M

    Molarity of NaOH solution = 3.6 / 2.495

    Molarity of NaOH solution = 1.443 M/L

    Therefore, molarity of the sodium hydroxide solution is 1.443 M/L
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