Question

Choose the correct answer form the alternatives given.
Which of the following has lowest thermal stability?

• A. $L{i}_{2}C{O}_3$
• B. $N{a}_{2}C{O}_3$
• C. $K_{2}C{O}_3$
• D. $R{b}_{2}C{O}_3$

Answer 1

The correct option is A $L{i}_{2}C{O}_3$

Lithium carbonates are least thermal stable compound which decompose upon heating to give lithium oxide and carbon dioxide.

${Li}_{2}C{O}_3\to {Li}_{2}O+C{O}_2$