P-Block Elements Ques 237
Question: Among the following nitrates, Lead nitrate, Silver nitrate and Ammonium nitrate; the one that decomposes without leaving any solid residue is
[NCERT 1983]
Options:
A) Lead nitrate
B) Ammonium nitrate
C) Silver nitrate
D) Sodium nitrate
Show Answer
Answer:
Correct Answer: B
Solution:
$ \underset{(s)}{\mathop{NH_4NO_3}}\xrightarrow{\Delta }2H_2O\uparrow +N_2O\uparrow $ $ \underset{(s)}{\mathop{NaNO_3}}\xrightarrow{\Delta }\underset{(s)}{\mathop{NaNO_2}}+O_2\uparrow $
$ \underset{\text{Lunar caustic}}{\mathop{2AgNO_3(s)}}\to 2Ag(s)+2NO_2(g)+O_2(g) $ $ 2Pb{{(NO_3)}_2}\to \underset{(s)}{\mathop{2PbO}}+4NO_2\uparrow +O_2\uparrow $
