Homework Help: Chemistry

Posted by Leah on Monday, May 21, 2012 at 6:18pm.

It requires 37.0 mL of a sodium hydroxide soltution to neutralize 0.75 grams of phosphoric acid. Using a balanced equation, determine the concentration of the sodium hydroxide solution.

Chemistry - DrBob222, Monday, May 21, 2012 at 6:40pm
3NaOH + H3PO4 ==> Na3PO4 + 3H2O

mols H3PO4 = grams/molar mass.
mols NaOH = 3x mols H3PO4 (from the equation).
M NaOH = mols NaOH/L NaOH.

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