Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
4K+O2->2K2O
2Fe(OH)3->Fe2O3+3H2O
2SO2+O2->2SO3
Cu+2AgNO3->Cu(NO3)2+2Ag
Câu 1:
\(a,Al_2O_3+6HNO_3\to 2Al(NO_3)_3+3H_2O\\ b,Ca(OH)_2+Na_2CO_3\to CaCO_3\downarrow+2NaOH\\ c,Fe_3O_4+4CO\xrightarrow{t^o}3Fe+4CO_2\\ d,N_2+3H_2\xrightarrow{t^o,p,xt}2NH_3\\ e,Zn+2HCl\to ZnCl_2+H_2\\ f,2H_2+O_2\xrightarrow{t^o}2H_2O\\ g,4Al+3O_2\xrightarrow{t^o}2Al_2O_3\\ h,2Fe(OH)_3\xrightarrow{t^o}Fe_2O_3+3H_2O\\ i,2Al+6HCl\to 2AlCl_3+3H_2\)
\(e,\text{Tỉ lệ: }Zn:H_2=1:1;HCl:ZnCl_2=2:1\\ f,\text{Tỉ lệ: }Al:H_2=2:3;HCl:AlCl_3=3:1\)
\(\left(1\right)Fe+\frac{1}{2}O_2\underrightarrow{t^o}FeO\\ \left(2\right)FeO+2HCl\rightarrow FeCl_2+H_2O\\ \left(3\right)FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2+2NaCl\\ \left(4\right)4Fe\left(OH\right)_2+O_2\underrightarrow{t^o}2Fe_2O_3+4H_2O\\ \left(5\right)Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\\ \left(6\right)FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\)
2Fe + O2---->2FeO
FeO +2HCl------>FeCl2+H2O
FeCl2 + 2NaOH-----> Fe(OH)2 +2NaCl
4Fe(OH)2 +O2----->2Fe2O3+4H2O
Fe2O3+6HCl----->2FeCl3 +3H2O
FeCl3+3NaOH---->Fe(OH)3 +3NaCl
Chúc bạn học tốt
\(a,\left(1\right)Fe_2O_3+3H_2\rightarrow2Fe+3H_2O\left(1:3:2:3\right)\)
\(\left(2\right)Mg+2HCl\rightarrow MgCl_2+H_2\left(1:2:1:1\right)\\ \left(3\right)2FeCl_3+3Ca\left(OH\right)_2\rightarrow2Fe\left(OH\right)_3+3CaCl_2\left(2:3:2:3\right)\)
\(\left(4\right)K_2CO_3+2HCl\rightarrow2KCl+H_2O+CO_2\left(1:2:2:1:1\right)\)
\(b,PTHH:2Cu+O_2\underrightarrow{t^o}2CuO\\ Áp.dụng.ĐLBTKL,ta.có:\\ m_{Cu}+m_{O_2}=m_{CuO}\\ m_{O_2}=m_{CuO}-m_{Cu}=32-25,6=6,4\left(g\right)\)
A) \(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
B) \(2KOH+Fe\left(NO_3\right)_2\rightarrow Fe\left(OH\right)_2+2KNO_3\)
ai giúp em với