Question

Among the nitrate of alkali metals which one can be decomposed into its oxide on strong heating?

• A. $NaN{O}_3$
• B. $KN{O}_3$
• C. $LiN{O}_3$
• D. All of these

Answer 1

Answer: (C)

$LiN{O}_3$

Reaction is: $4LiN{O}_3\to 2L{i}_{2}O+4N{O}_2+O_2$

On heating, other nitrates give nitrite and oxygen.

AS the thermal stability of nitrate increases down the group.