Readings:
A. Oxalic acid
- COOH
- COOH is corrosive because acid, but usually the problem is
Soluble oxalates:
1) potassium acid oxalate
- COOK
- COOH
2) sodium oxalate
- COONa
- COONa
3) ammonium oxalate
Insoluble oxalates include calcium and magnesium salts