Lithium carbonate is stored in an atmosphere of CO2. Explain giving reasons. Share with your friends Share 7 Geetha answered this Lithium carbonate is thermally unstable. It gets decomposed to Lithium oxide and carbondioxide.Li2CO3 → Li2O + CO2When they are stored in the atmosphere of carbondioxide, the concentration of [CO2] increases in the rightside, making the reaction to shift towards backside.Li2CO3 ↔ Li2O + CO2So that the decomposition of lithium carbonate is prevented. 4 View Full Answer