Homework Help: Chemistry

Posted by Lilit *** on Wednesday, October 29, 2008 at 10:55pm.

If 20.00 mL of 0.2019 M HCl requires 39.63 mL of a NaOH solution for complete neutralization, what is the concentration of the NaOH solutions? How many significant figures are justified in the answer?

Chemistry - DrBob222, Wednesday, October 29, 2008 at 10:57pm
The equation is
HCl + NaOH ==> NaCl + H2O

mols HCl = M x L
Convert mols HCl to mols NaOH from the equation.
M(NaOH) = #mols/L.
You have mols and L, solve for M.
Post your work if you get stuck.

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