8 Questions
Which of the following is a correctly balanced chemical reaction for the production of lithium carbonate using lithium peroxide?
2 Li2O2 + 2 CO2 → 2 Li2CO3 + O2
Which property of lithium carbonate decreases with an increase in temperature?
Solubility in water
During the identification process, what color does lithium carbonate impart to a non-luminous flame when moistened with HCl?
Crimson
How is the percentage (%) value calculated in a lithium carbonate assay?
Volume used * factor (100) / weight of sample
What is the molecular weight of lithium carbonate?
73.888g/mol
Which of the following statements is true about lithium carbonate?
It liberates carbon dioxide when reacted with dilute acids.
Which condition is NOT treated with lithium systemic?
Cluster Headaches
Which reagent is used to confirm the presence of lithium carbonate through the formation of a white precipitate?
Calcium Hydroxide
Study Notes
Lithium Carbonate - Li2CO3
Introduction
- Lithium carbonate is a mood stabilizing agent used to treat mania, bipolar disorders, and recurrent depression for over 50 years.
- It has no psychotropic effects on normal individuals.
Other Names
- Dilithium carbonate
- Lithonate
- Lithobid
Preparation
- Lithium carbonate is generated by combining lithium peroxide with carbon dioxide.
- It can also be produced by reacting lithium hydroxide with sodium carbonate.
Properties
- Molecular weight: 73.888 g/mol
- Lithium carbonate is a colorless, hygroscopic, and polymeric salt.
Pharmaceutical Analysis
- Protein binding: 89-91%
- Solubility: sparingly soluble in water, decreasing with increasing temperature, but dissolves in the presence of carbon dioxide.
Identification
- Lithium carbonate effervesces with acid, yielding a colorless gas that forms a white precipitate with calcium hydroxide.
- It imparts an intense crimson color to a non-luminous flame when moistened with HCl.
Assay
- Lithium carbonate is assayed by titrating excess acid with IN NaOH, with each ml of IN sulfuric acid equivalent to 36.95mg of Li2CO3.
Reactions
- Lithium carbonate reacts with dilute acids, liberating carbon dioxide.
- It undergoes thermal decomposition to yield lithium oxide and carbon dioxide.
- It reacts with lime to produce lithium hydroxide.
- It converts to lithium fluoride when reacting with molten aluminum fluoride.
- It combines with carbon dioxide in aqueous slurry to form soluble bicarbonate.
Uses
- Lithium systemic is used to treat bipolar disorder and borderline personality disorder.
Lithium carbonate is a mood stabilizing agent used to treat bipolar disorders, mania, and recurrent depression. Learn about its properties, names, and preparation.
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