Homework Help: Chemistry

Posted by John on Wednesday, April 25, 2012 at 10:53pm.

A 2.7 M solution of phosphoric acid (H3PO4) is to be reacted with a 7.5 M solution of sodium hydroxide to make sodium phosphate and water. How many L of the H3PO4 solution will react with 0.662 L of the NaOH solution

Chemistry - DrBob222, Thursday, April 26, 2012 at 12:22am
H3PO4 + 3NaOH ==> 3H2O + Na3PO4
mols NaOH = M x L = ?
Convert mols NaOH to mols H3PO4 using the coefficients in the balanced equation.
M H3PO4 = mols/L. You have M and mols, solve for L H3PO4.

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