JEE MAIN - Chemistry (2018 (Offline) - No. 11)
The compound that does not produce nitrogen gas by the thermal decomposition is :
(NH4)2SO4
Ba(N3)2
(NH4)2Cr2O7
NH4NO2
Giải thích
Thermal decomposition reaction of the given compounds are . . .
(NH4)2SO4 $$\buildrel \Delta \over \longrightarrow $$ 2 NH3(g) + H2SO4
Ba (N3)2 $$\buildrel \Delta \over \longrightarrow $$ Ba + 3N2(g)
NH4NO2 $$\buildrel \Delta \over \longrightarrow $$ N2(g) + 2H2O
(NH4)2Cr2O7 $$\buildrel \Delta \over \longrightarrow $$ N2(g) + 4H2O + Cr2O3
So, here you can see only (NH4)2SO4 does not give N2 by thermal decomposition it gives NH3 while other give N2 gas
(NH4)2SO4 $$\buildrel \Delta \over \longrightarrow $$ 2 NH3(g) + H2SO4
Ba (N3)2 $$\buildrel \Delta \over \longrightarrow $$ Ba + 3N2(g)
NH4NO2 $$\buildrel \Delta \over \longrightarrow $$ N2(g) + 2H2O
(NH4)2Cr2O7 $$\buildrel \Delta \over \longrightarrow $$ N2(g) + 4H2O + Cr2O3
So, here you can see only (NH4)2SO4 does not give N2 by thermal decomposition it gives NH3 while other give N2 gas