Question

Which nitrate will decompose to give $NO_2$ on heating?

• A. $NaNO_3$
• B. $KNO_3$
• C. $RbNO_3$
• D. $LiNO_3$

Answer 1

Answer: (D)

$LiNO_3$

Answer 2

Only $LiNO_3$ gives $NO_2$ on heating. All other nitrates give oxygen. ${4LiNO3->[\Delta] 2Li2O +4NO2 +O2}$ ${2NaNO3 ->[\Delta] 2NaNO2 +O2}$