a)
\(2ZnS+3O_2\rightarrow2ZnO+2SO_2\)
\(4FeS_2+11O_2\rightarrow2Fe_2O_3+8SO_2\)
b) Đổi: \(44,8m^3=44800l\)
\(n_{SO_2}=\frac{V_{SO_2}}{22,4}=\frac{44800}{22,4}=2000\left(mol\right)\)
\(PTHH:\) câu a
\(Theo\) \(PTHH,\) \(ta có:\)
\(n_{ZnS}=n_{SO_2}=2000\left(mol\right)\)
\(n_{FeS_2}=\frac{4}{8}n_{FeS_2}=\frac{1}{2}n_{FeS_2}=\frac{1}{2}.2000=1000\left(mol\right)\)
\(m_{ZnS}=n_{ZnS}.M_{ZnS}=2000.97=194000\left(g\right)=194\left(kg\right)\)
\(m_{FeS_2}=n_{FeS_2}.M_{FeS_2}=1000.120=120000\left(g\right)=120\left(kg\right)\)
a) 2ZnS +3 O2 \(\rightarrow\) 2ZnO + 2SO2
4FeS2 + 11O2 \(\rightarrow\) 2Fe2O3 +8SO2
b) T a có : nSO2=\(\frac{44,8}{22,4}\)=2 kmol
Nếu dùng ZnS \(\rightarrow\) nZnS=nSO2=2kmol \(\rightarrow\) mZnS=2.(65+32)=194 kg
Nếu dùng FeS2 \(\rightarrow\) nFeS2=\(\frac{1}{2}\)nSO2=1kmol
\(\rightarrow\) mFeS2=1.(56+32.2)=120kg