Question

What are the products formed when $L{i_2}C{O_3}$ undergoes decomposition?
A. $L{i_2}C{O_3} + CO$
B. $L{i_2}O + CO$
C. $L{i_2}O + C{O_2}$
D. $Li{O_2} + CO$

Answer 1

Hint: The carbonate salt of lithium, a soft alkali metal having antimanic and hematopoietic properties, is lithium carbonate. Lithium carbonate comes in the form of a white powder. When dissolved in water, it produces a strong irritant.

Complete answer:
The decomposition of lithium carbonate gives lithium monoxide and carbon dioxide.
The reaction is as follows:
$L{i_2}C{O_3}\xrightarrow{\vartriangle }L{i_2}O + C{O_2}$
A chemical reaction in which one reactant breaks down into two or more products is known as a decomposition reaction. The decomposition of lithium carbonate is an example of thermal decomposition reaction.
A decomposition reaction that is activated by thermal energy is known as a thermal decomposition reaction. To put it another way, a thermal decomposition reaction necessitates the delivery of energy to the reactants in the form of heat. Because energy is required to break chemical bonds and separate the constituent elements, such reactions are usually endothermic.
The extraction of metals from their ores is one of the most common uses of decomposition processes. Zinc, for example, can be extracted from calamine by a decomposition reaction. Sodium can also be created from sodium chloride in a similar way ($NaCl$).

So, the correct answer is “Option D”.

Note:
A combination reaction is the total opposite of a decomposition process. The creation of a single product from two or more reactants is the goal of these reactions. Decomposition reactions are not all endothermic. Endothermic and exothermic breakdown reactions are both possible. The latter, however, is more common than the former.