Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(2Fe_2S+8SO_2\rightarrow8SO_3+8H_2SO_4\)
Theo tỉ lệ khối lượng: 240 tấn FeS2 tạo 784 tấn H2SO4
=> 12 tấn FeS2 tạo \(\frac{12.784}{240}=39,2\) tấn H2SO4
Thực tế tạo ra 30.49%= 14,7 tấn H2SO4
\(\Rightarrow H=\frac{14,7.100}{39,2}=37,5\%\)
\(n_{FeS_2}=\frac{12000000}{120}=100000\left(mol\right)\)
\(sdpu:FeS_2\rightarrow SO_2\rightarrow SO_3\rightarrow H_2SO_4\)
(mol)______ \(1\rightarrow2\rightarrow2\rightarrow2\)______
Ta thấy: 1 mol FeS2 sinh ra 2 mol H2SO4
Do đó: 100000 mol FeS2 sẽ sinh ra 200000 mol H2SO4
\(\Rightarrow m_{H_2SO_4}=200000.98=19600000\left(g\right)=19,6\left(tan\right)\)
\(H=\frac{30.49\%}{19,6}.100\%=75\left(\%\right)\)
CH4+2 O2 ---to-->.......CO2+2H2O
4P + 5O2--to---->...2P2O5.....
SO3+H2O...-------> H2SO4
P2O5+3H2O->2H3PO4
2KMnO4 ---to----->......K2MNO4...+......MnO2..+..O2.....
2KClO3-------->..2KCl.......+...3.O2...
\(CH_4+2O_2\underrightarrow{t^o}CO_2+2H_2O\\ 4P+5O_2\underrightarrow{t^o}2P_2O_5\\ P_2O_5+3H_2O\rightarrow2H_3PO_4\\ 2KMnO_4\underrightarrow{t^o}K_2MnO_4+MnO_2+O_2\\ 2KCl\xrightarrow[xtMnO_2]{t^o}2KCl+3O_2\)
2Na + 2H2O --> 2NaOH + H2
2Cu + O2 --to--> 2CuO
2KClO3 --to--> 2KCl + 3O2
2KMnO4 --to--> K2MnO4 + MnO2 + O2
CuO + H2 --to--> Cu + H2O
2Al + 3H2SO4 --> Al2(SO4)3 + 3H2
2Na + 2 H2O → ...2NaOH.........+.....H2....
2Cu +.....O2.......→ 2CuO
2KClO3 →..2.KCl......+.......3O2.....
2KMnO4 →...K2MnO4......+....MnO2.....+....O2....
...H2.......+....CuO......→ Cu + H22O
2Al + 3H2SO4 →...Al2(SO4)3.....+..H2.......
\(n_{H_2}=\dfrac{33,6}{22,4}=1,5\left(mol\right)\\ m_{H_2}=1,5.2=3\left(g\right)\)
PTHH : 2Al + H2SO4 -> Al2SO4 + H2
Theo ĐLBTKL
\(m_{Al}+m_{H_2SO_4}=m_{Al_2SO_4}+m_{H_2}\\ \Rightarrow m_{H_2SO_4}=\left(171+3\right)-2,7=171,3\left(g\right)\)
pthh: 2Al+3H\(_2\)SO\(_4\)→Al\(_2\)(SO4)\(_3\)+3H\(_2\)↑
nH\(_2=33,6:22,4=1,5\left(mol\right)\)
\(mH_2=1,5.2=3\left(g\right)\)
\(nAl_2\left(SO_4\right)=171:150=1,14\left(mol\right)\)
\(mAl_2\left(SO_4\right)_3=1,14.342=389,88\left(g\right)\)
BTKL : mAl + mH\(_2\)SO\(_4\) = m Al\(_2\)(SO4)\(_3\) + m H\(_2\)
2,7 + mH\(_2\)SO\(_4\) = 389,88 + 3
=> \(mH_2SO_4=\left(389,88+3\right)-2,7=390,18\left(g\right)\)
\(Zn+2HCl\rightarrow ZnCl_2+H_2\)
\(Zn+H_2SO_4\rightarrow ZnSO_4+H_2\)
\(3Zn+2H_3PO_4\rightarrow Zn_3\left(PO_4\right)_2+3H_2\)
