posted by John .
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
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.