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Ethanedioic acid is an organic solid that can be purified by 

Chemistry
WAEC 2024

Ethanedioic acid is an organic solid that can be purified by 

  • A. decantation
  • B. distillation
  • C. crystallization
  • D. filtration
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Correct Answer: Option C
Explanation

Solid ethanedioic acid (also known as oxalic acid) is typically purified through a process called crystallization where the impure solid is dissolved in a hot solvent (usually water), then allowed to cool slowly, causing the purer crystals to precipitate out while leaving impurities behind in the solution; this process can be repeated multiple times for further purification. 


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