Copper oxalate can be synthesized through a chemical reaction between a copper salt and oxalic acid. Below is a general method for preparing copper oxalate in a laboratory setting. Consider performing this synthesis in a well-ventilated area or fume hood, and always wear appropriate personal protective equipment (PPE) such as gloves and goggles.
### Materials Needed:
- Copper(II) sulfate pentahydrate (CuSO₄·5H₂O) or another soluble copper


