Calculate the molarity of a sodium hydroxide solution if 10.42 mL of this solution are needed to neutralize 25.00 mL of 0.2043 M oxalic acid. how do you do the working out

Answer 1

2NaOH + H2C2O4 ==> Na2C2O4 + 2H2O

mols H2C2O4 = M x L = ?
mols NaOH = 1/2 that (look at the coefficients in the balanced equation.)
M NaOH = mols NaOH/L NaOH.

Answer 2

0.9808 M NaOH