\(n_{Al}=\dfrac{5,4}{27}=0,2\left(mol\right)\)
\(n_{Al\left(NO_3\right)_3}=0,23\left(mol\right)\)
\(10Al+36HNO_3\rightarrow10Al\left(NO_3\right)_3+3N_2+18H_2O\)
0,2 --------------------------------------> 0,06
( Al hết, Al(NO3)3 dư )
\(V_{N_2}=0,06.22,4=1,344\left(l\right)\)
Bt khối lượng trong muối:
mà ta có:
Bt Al: \(n_{Al}=n_{Al\left(NO_3\right)_3}=0,2mol\)
\(\Rightarrow80n_{NH_4NO_3}+213.0,2=44,6\Leftrightarrow n_{NH_4NO_3}=0,025mol\)Bt e:
\(3n_{Al}=8n_{NH_4NO_3}+10n_{N_2}\\ \Rightarrow n_{N_2}=0,04mol\\ \Rightarrow V_{N_2}=0,896l\)