Chemistry

A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 750 mL of a solution that has a concentration of Na^+ ions of 1.3 M?
Express your answer numerically in grams.

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  1. M = moles/L
    1.3 M = moles/0.750
    Solve for moles.
    Then moles = grams/molar mass.
    Solve for grams. That will give you g Na3PO4 to make 1.3 M Na3PO4 so divide that number by 3 to give 1.3 M sodium ions and not Na3PO4.

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  2. 111.797

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  3. 159.85

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