\(PTHH:S+O_2\underrightarrow{t^o}SO_2\\ SO_2+\frac{1}{2}O_2\xrightarrow[V_2O_5]{t^o}SO_3\\ SO_3+H_2O\rightarrow H_2SO_4\)
\(m_{S\cdot trong\cdot FeS_2}=320.10^6.45\%=144.10^6\left(g\right)\)
\(n_S=\frac{144.10^6}{32}=45.10^5\left(mol\right)\)
Theo pt: \(n_S=n_{SO_2}=n_{SO_3}=n_{H_2SO_4}\)
\(\Rightarrow n_{H_2SO_4}=45.10^5\left(mol\right)\)
\(\Rightarrow m_{H_2SO_4}=45.10^5.98=441.10^6\left(g\right)=441\left(ton\right)\)
\(H=\frac{441}{450}.100\%=98\left(\%\right)\)
Đề bài 1 có bị nhầm khối lượng axit sunfuric k đấy bạn? ._.
\(PTHH:2FeS_2+\frac{11}{2}O_2\underrightarrow{t^o}Fe_2O_3+4SO_2\\ SO_2+\frac{1}{2}O_2\underrightarrow{t^o,xt}SO_3\\ SO_3+H_2O\rightarrow H_2SO_4\)
\(m_{FeS_2}=80\%.10^6=8.10^5\left(g\right)\\ n_{FeS_2}=\frac{8.10^5}{120}=\frac{20000}{3}\left(mol\right)\)
\(Theo\cdot pt:\\ \Rightarrow n_{H_2SO_4}=\frac{40000}{3}\left(mol\right)\\ \Rightarrow m_{H_2SO_4}=\frac{40000}{3}.98=1306666,667\left(g\right)\\ \Rightarrow m_{H_2SO_4\cdot khi\cdot hh}=1306666,667-1306666,667.5\%=1241333,333\left(g\right)\\ \Rightarrow m_{ddH_2SO_4}=\frac{1241333,333.100\%}{60\%}=2068888,889\left(g\right)\approx2,068\left(ton\right)\)
( Câu này thì k chắc :>)
Bài 1 4FeS2+11O2--to-->2Fe2O3+8SO2
2SO2+O2--to,V2O5-->2SO3
SO3+H2O->H2SO4
nS==144 (tấn)
nS=144/32=4,5 (kmol)
Bảo toàn S:
nS (FeS2)=nS (H2SO4)=4,5 (kmol)
mH2SO4 lý thuyết=4,5*98=441 (tấn)
%H==91,84%