Oxalic acid dihydrate is a solid, diprotic acid that can be used in the laboratory as...

Oxalic acid dihydrate is a solid, diprotic acid that can be used in the laboratory as a primary standard. Its formula is H₂C₂O₄

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Expert Solution

Lets start by writing a balanced chemical equation for the titration/ neutralization process:

H₂C₂O₄.2H₂O + Ba(OH)₂ = BaC₂O₄ + 4H₂O

1 mole H₂C₂O₄.2H₂O = 1 mole Ba(OH)2 = 126g H₂C₂O₄.2H₂O

Equality of mass and volume:

0.896g H2C2O4.2H2O = 0.0382 L Ba(OH)2

Our goal = mol Ba(OH)₂/L Ba(OH)₂ = Molarity of Ba(OH)₂

Now lets set up the given values and calculate the unknown:

     1mol Ba(OH)2                   0.896 g H2C2O4.2H2O
------------------------------- x  ---------------------------- = 0.186 mol/L Ba(OH)2
126 g H2C2O4.2H2O               0.0382 L Ba(OH)2

The molarity of barium hydroxide is 0.186 M.

queen_honey_blossom answered 1 year ago

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