Which of the following reaction is correct?

Options

A $2{LiNO}_{3}\overset{\Delta}{⟶}2{LiNO}_{2} + {O}_{2}$
B $4{LiNO}_{3}\overset{\Delta}{⟶}2{Li}_{2}O + 2{N}_{2}{O}_{4} + {O}_{2}$
C $4{LiNO}_{3}\overset{\Delta}{⟶}2{Li}_{2}O + 4{NO}_{2} + {O}_{2}$
D $2{LiNO}_{3}\overset{\Delta}{⟶}2Li + 2{NO}_{2} + {O}_{2}$

Correct answer

C. $4{LiNO}_{3}\overset{\Delta}{⟶}2{Li}_{2}O + 4{NO}_{2} + {O}_{2}$

Step-by-step solution

Lithium nitrate when decomposed, the product formed are ${Li}_{2}O, {NO}_{2}$ and ${O}_{2}$ . The remaining alkali metal nitrates decomposes to nitrite of metals and oxygen gas. It is due to the lithium monoxide is stable than other monoxides.

$4{LiNO}_{3}\overset{\Delta}{⟶}2{Li}_{2}O + 4{NO}_{2} + {O}_{2}$

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