application

Understanding the Molar Mass of NaFeEDTA·3H₂O: A Key Compound in Chemistry

What is NaFeEDTA·3H₂O?
NaFeEDTA·3H₂O, or sodium ferric ethylenediaminetetraacetate trihydrate, is a coordination complex widely used in analytical chemistry, agriculture (as an iron supplement), and industrial applications. Its structure consists of an iron (Fe³⁺) ion bound to an EDTA ligand, with sodium (Na⁺) as a counterion and three water (H₂O) molecules in its hydrated form.

Calculating the Molar Mass
The molar mass of NaFeEDTA·3H₂O is the sum of the atomic masses of all its constituent elements:

1. Sodium (Na): 22.99 g/mol
2. Iron (Fe): 55.85 g/mol
3. EDTA (C₁₀H₁₂N₂O₈):
– Carbon (C): 12.01 × 10 = 120.1 g/mol
– Hydrogen (H): 1.008 × 12 = 12.096 g/mol
– Nitrogen (N): 14.01 × 2 = 28.02 g/mol
– Oxygen (O): 16.00 × 8 = 128.0 g/mol
– Total EDTA mass: 120.1 + 12.096 + 28.02 + 128.0 = 288.216 g/mol
4. Water (H₂O): (1.008 × 2 + 16.00) × 3 = 54.048 g/mol

Final Calculation:
Na (22.99) + Fe (55.85) + EDTA (288.216) + 3H₂O (54.048) = 421.104 g/mol

Importance of Molar Mass
Knowing the molar mass of NaFeEDTA·3H₂O is essential for:
– Precision in chemical reactions – Ensures accurate stoichiometric calculations.
– Industrial formulations – Used in fertilizers and metal chelation processes.
– Analytical chemistry – Critical for titrations and spectrometry.

Conclusion
The molar mass of NaFeEDTA·3H₂O is 421.104 g/mol, a crucial value for researchers and industries relying on this compound. Understanding its composition aids in efficient and accurate chemical applications.