Posted by anonymous on Sunday, April 11, 2010 at 6:19am.
The trick to these question is to recognize what you have in the final solution.
Write the equation.
H2SO4 + 2NaOH ==> Na2SO4 + 2H2O
moles H2SO4 = M x L = ??
moles NaOH = M x L= ??
moles H2SO4 required to use all of it will be moles H2SO4 x 2 (since there are two moles NaOH for every mole of H2SO4). Look at those numbers, see which is in excess and use that to calculate either the OH or the H depending upon the one in excess.
Post your work if you get stuck.
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