The mass of oxalic acid crystals (H,C,02H,0) 2
required to prepare 50 mL of a 0.2 N solution is:
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0.63 g is the mass of oxalic acid crystals required to prepare 50 ml of a 0.2 N solution.
Explanation: -
Oxalic acid exists as the dihydrate C₂H₂O₄.2H₂O.
Molecular weight of oxalic acid dihydrate = 126 g / mol.
Gram equivalent weight = Molecular weight / basicity
= = 63 g / mol
1 Normal solution of oxalic acid should have 63 g in 1 L.
0.2 Normal solution of oxalic acid should have
= 12.6 g in 1 L.
0.2 Normal solution of oxalic acid should have in 50 mL.
= 0.63 g in 50 mL.
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