Question

0.255 g sample of H2C2O4 required 25.70 mL of NaOH to neutralize, what would you report as the molarity of NaOH solution? the reaction is as follows:
H2C2O4(aq) +2 NaOH (aq) -> Na2C2O4(aq) +2 HOH (l)

Answer 1

moles H2C2O4 = grams/molar mass = ??
Using the coefficients in the balanced equation, convert moles H2C2O4 to moles NaOH. That will be ??moles H2C2O4 x (2 moles NaOH/1 mole H2C2O4) = ??moles H2C2O4 x 2 = xx moles NaOH.
Then M NaOH = moles NaOH/L NaOH, and round to the appropriate number of significant figures.

Answer 2

.220 mol per liter

Answer 3

I agree.

Answer 4

Thank you!