wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The equivalent weight of crystalline Oxalic acid is


Open in App
Solution

Step 1: Equivalent mass:

  • The equivalent mass of an acid is defined as the molecular mass of an acid divided by the basicity of the acid.

Step 2: Formula for equivalent mass:

Equivalentmassofacid=MolarmassofacidBasicityofacid

Step 3: Calculation for equivalent mass:

  • The crystalline oxalic acid has a chemical formula COOH2.2H2O.
  • The molar mass of crystalline oxalic acid is 126gmol-1.

Molecularmassofoxalicacid=AtomicmasofC+AtomicmassofO+AtomicmassofHMolecularmassofoxalicacid=(2×12)+(6×16)+(6×1)Molecularmassofoxalicacid=126gmol-1

  • The basicity of oxalic acid is 2. Since 1 mole of oxalic acid can release 2 moles of H+ ions and neutralize 2 moles of OH ions, the number of equivalent moles here is equal to 2.

Equivalentmassofcrystallineoxalicacid=MolarmassofcrystallineoxalicacidBasicityofcrystallineoxalicacidEquivalentmassofcrystallineoxalicacid=126gmol-12=63geq-1

Thus, the equivalent mass of crystalline oxalic acid is 63geq-1.


flag
Suggest Corrections
thumbs-up
26
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Percentage Composition and Molecular Formula
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon