The molar mass of a compound is calculated by summing the atomic masses of all the atoms in its chemical formula. For lithium nitride (Li₃N), we need to consider the atomic masses of lithium (Li) and nitrogen (N).
Atomic Mass of Lithium (Li):
The atomic mass of lithium is approximately 6.94 g/mol.Atomic Mass of Nitrogen (N):
The atomic mass of nitrogen is approximately 14.01 g/mol.Chemical Formula of Lithium Nitride (Li₃N):
The formula indicates there are 3 lithium atoms and 1 nitrogen atom in each molecule.Calculation of Molar Mass:
[ \text{Molar Mass of Li}_3\text{N} = (3 \times \text{Atomic Mass of Li}) + (\text{Atomic Mass of N}) ]
[ \text{Molar Mass of Li}_3\text{N} = (3 \times 6.94\,\text{g/mol}) + 14.01\,\text{g/mol} ]
[ \text{Molar Mass of Li}_3\text{N} = 20.82\,\text{g/mol} + 14.01\,\text{g/mol} = 34.83\,\text{g/mol} ]
Practical Applications of Lithium Nitride
Lithium nitride is a fascinating compound with several notable properties and applications:
- Ionic Conductivity: Li₃N is known for its high ionic conductivity, making it a candidate for use in solid-state batteries.
- Thermoluminescence: It exhibits thermoluminescent properties, which have applications in radiation dosimetry.
- Chemical Synthesis: Li₃N is used as a reagent in organic synthesis, particularly in the deprotonation of strong acids.
Comparative Analysis with Other Lithium Compounds
To understand Li₃N better, let’s compare its molar mass with other common lithium compounds:
| Compound | Formula | Molar Mass (g/mol) |
|---|---|---|
| Lithium Nitride | Li₃N | 34.83 |
| Lithium Oxide | Li₂O | 29.88 |
| Lithium Carbonate | Li₂CO₃ | 73.89 |
This comparison highlights how the molar mass of Li₃N falls between that of lithium oxide and lithium carbonate, reflecting its composition and structure.
Historical Context of Lithium Nitride
Lithium nitride was first synthesized in the early 20th century as part of efforts to understand the chemistry of alkali metals and their compounds. Its discovery paved the way for exploring its unique properties, such as its ionic nature and potential applications in energy storage.
Future Implications
As research into solid-state batteries and advanced materials continues, lithium nitride’s role in these technologies is likely to expand. Its high ionic conductivity and stability make it a promising candidate for next-generation energy storage solutions.
What is the molar mass of Li₃N?
+The molar mass of lithium nitride (Li₃N) is 34.83 g/mol.
How is the molar mass of Li₃N calculated?
+The molar mass is calculated by summing the atomic masses of 3 lithium atoms (3 × 6.94 g/mol) and 1 nitrogen atom (14.01 g/mol), resulting in 34.83 g/mol.
What are the main applications of lithium nitride?
+Lithium nitride is used in solid-state batteries, radiation dosimetry, and organic synthesis due to its ionic conductivity and thermoluminescent properties.
How does the molar mass of Li₃N compare to other lithium compounds?
+Li₃N has a molar mass of 34.83 g/mol, which is higher than lithium oxide (29.88 g/mol) but lower than lithium carbonate (73.89 g/mol).
In conclusion, understanding the molar mass of lithium nitride (Li₃N) is fundamental to appreciating its chemical properties and applications. With a molar mass of 34.83 g/mol, Li₃N stands out as a versatile compound with significant potential in modern technology.
