Question

H2C2O4 * 2H2O (s) is a primary standard substance. 2.3688 grams of oxalic acid dihydrate were completely neutralized by 42.56 milliliters of NaOH solution. Calculate the molar concentration of the NaOH solution.

Answer 1

H2Ox + 2NaOH ==> 2H2O + Na2Ox

moles H2Ox = grams/molar mass
Convert moles H2Ox to moles NaOH using the coefficients in th balanced equation. That will give you moles NaOH = 2 x moles H2Ox.
Then M NaOH = moles NaOH/L NaOH.

Answer 2

. H
2
C
2
O
4
.2H
2
O(s) is a primary standard substan
ce. 2.3688 g of oxalic acid dihydrate
were completely neutralized by 42.56 ml
of NaOH solution. Calculate the molar
concentration of the NaOH solution. Hint:
You must write a balanced equation for the
react