Draw the Lewis structure of oxalic acid (H2C2O4)

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SUMMARY

The discussion focuses on the Lewis structure of oxalic acid (H2C2O4) and its relation to calcium oxalate (CaC2O4), the most common type of kidney stone. Key data includes the acid dissociation constants (Ka1 = 5.6×10-2, Ka2 = 5.42×10-5) for oxalic acid and the solubility product constant (Ksp = 1.3 × 10-8) for calcium oxalate. The conversation also addresses the impact of urine pH on calcium oxalate precipitation, indicating that higher pH levels may lead to increased precipitation. Recommendations for preventing calcium oxalate kidney stones are sought based on this information.

PREREQUISITES
  • Understanding of Lewis structures and molecular geometry
  • Knowledge of acid-base equilibria, specifically regarding oxalic acid
  • Familiarity with solubility product constants (Ksp) and their implications
  • Basic concepts of kidney stone formation and prevention strategies
NEXT STEPS
  • Research the effects of urine pH on calcium oxalate solubility
  • Study dietary modifications to prevent calcium oxalate kidney stones
  • Learn about the treatment options for dissolving calcium oxalate stones
  • Explore the role of hydration in kidney stone prevention
USEFUL FOR

Medical professionals, biochemists, and individuals interested in kidney health and the prevention of calcium oxalate kidney stones will benefit from this discussion.

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There are many different types of kidney stones, but the most common is calcium oxalate, CaC2O4. The pH range of blood is 7.2-7.3. The pH of urine ranges from 4 to 8.

Draw the Lewis structure of oxalic acid (H2C2O4) and the oxalate anion (C2O4-2).

H2C2O4 Ka1 = 5.6×10-2, Ka2=5.42×10-5

CaC2O4 Ksp = 1.3 × 10-8

Given the data above, suggest a treatment for dissolving calcium oxalate kidney stones. What would you recommend to prevent the formation of calcium oxalate kidney stones?

I have no idea how to do this. But I managed to draw the lewis diagrams though...
 
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Would there be more precipitation of calcium oxalate at higher pH or lower pH?
 

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