a, \(2H_2+O_2\underrightarrow{t^O}2H_2O\)

\(4K+O_2\underrightarrow{t^o}2K_2O\)

\(Ba+\dfrac{1}{2}O_2\underrightarrow{t^o}BaO\)

\(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)

\(Cu+\dfrac{1}{2}O_2\underrightarrow{t^o}CuO\)

\(CH_4+2O_2\underrightarrow{t^o}CO_2+2H_2O\)

b, \(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)

\(PbO+H_2\underrightarrow{t^o}Pb+H_2O\)

\(HgO+H_2\underrightarrow{t^o}Hg+H_2O\)

\(Fe_3O_4+4H_2\underrightarrow{t^o}3Fe+4H_2O\)

c, \(Na+HCl\rightarrow NaCl+\dfrac{1}{2}H_2\)

\(Mg+2HCl\rightarrow MgCl_2+H_2\)

\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)

d, \(2Na+2H_2O\rightarrow2NaOH+H_2\)

\(Ba+2H_2O\rightarrow Ba\left(OH\right)_2+H_2\)

\(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)

\(Na_2O+H_2O\rightarrow2NaOH\)

\(SO_2+H_2O⇌H_2SO_3\)

\(SO_3+H_2O\rightarrow H_2SO_4\)

\(H_2+\dfrac{1}{2}O_2\xrightarrow[]{t^o}H_2O\)

\(4H_2+Fe_3O_4\xrightarrow[]{t^o}3Fe+4H_2O\)

\(H_2+PbO\xrightarrow[]{t^o}Pb+H_2O\)

\(H_2+CuO\xrightarrow[]{t^o}Cu+H_2O\)

a, \(2Na+2H_2O\rightarrow2NaOH+H_2\)

\(BaO+H_2O\rightarrow Ba\left(OH\right)_2\)

\(CO_2+H_2O⇌H_2CO_3\)

b, \(S+O_2\underrightarrow{t^o}SO_2\)

\(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)

\(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)

\(4Na+O_2\underrightarrow{t^o}2Na_2O\)

c, \(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)

4Al + 3O2 -> (t°) 2Al2O3 (phản ứng hóa hợp)

2KMnO4 -> (t°) K2MnO4 + MnO2 + O2 (phản ứng phân hủy)

S + O2 -> (t°) SO2 (phản ứng hóa hợp)

2H2 + O2 -> (t°) 2H2O (phản ứng hóa hợp)

Fe2O3 + 3H2 -> (t°) 2Fe + 3H2O (phản ứng oxi hóa khử)

Mg + 2HCl -> MgCl2 + H2 (phản ứng thế)

\(CH_4+2O_2\underrightarrow{t^o}CO_2+2H_2O\)

\(CH_4+Cl_2\underrightarrow{as}CH_3Cl+HCl\)

\(2C_2H_2+5O_2\underrightarrow{t^o}4CO_2+2H_2O\)

\(C_2H_2+2Br_2\rightarrow C_2H_2Br_4\)

\(C_2H_4+3O_2\underrightarrow{t^o}2CO_2+2H_2O\)

\(C_2H_4+Br_2\rightarrow C_2H_4Br_2\)

kb zalo ik r chỉ cho nà =))

Bài 1:

a. Zn + 2HCl -> ZnCl₂ + H₂

b. CuO + 2HCl -> CuCl₂ + H₂O

c. Ba(OH)₂ + 2HCl - > BaCl₂ + 2H₂O

d. Fe(OH)₃ + 3HCl -> FeCl₃ + 3H₂O

B1:

\(a,Zn+2HCl\rightarrow ZnCl_2+H_2\\ b,CuO+2HCl\rightarrow CuCl_2+H_2O\\ c,Ba\left(OH\right)_2+2HCl\rightarrow BaCl_2+2H_2O\\d, Fe\left(OH\right)_3+3HCl\rightarrow FeCl_3+3H_2O\)

B2:

\(n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\\ n_{HCl}=0,1.3=0,3\left(mol\right)\\ a,Mg+2HCl\rightarrow MgCl_2+H_2\\ Vì:\dfrac{0,1}{1}< \dfrac{0,3}{2}\Rightarrow HCldư\\ b,n_{H_2}=n_{MgCl_2}=n_{Mg}=0,1\left(mol\right)\\ n_{HCl\left(dư\right)}=0,3-0,1.2=0,1\left(mol\right)\\ b,V_{H_2\left(đktc\right)}=0,1.22,4=2,24\left(l\right)\\ c,C_{MddMgCl_2}=\dfrac{0,1}{0,1}=1\left(M\right)\\ C_{MddHCl\left(dư\right)}=\dfrac{0,1}{0,1}=1\left(M\right)\)

\(n_{H_2\left(1\right)}=\dfrac{6.72}{22.4}=0.3\left(mol\right)\)

\(n_{H_2\left(2,3\right)}=\dfrac{11.2}{22.4}=0.5\left(mol\right)\)

\(2Al+2KOH+2H_2O\rightarrow2KAlO_2+3H_2\)

\(0.2....................................................0.3\)

\(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)

\(0.2............................................0.15\)

\(Mg+H_2SO_4\rightarrow MgSO_4+H_2\)

\(0.35..............................0.5-0.15\)

\(m_{Al}=0.2\cdot27=5.4\left(g\right)\)

\(m_{Mg}=0.35\cdot24=8.4\left(g\right)\)

a) 

\(S+O_2\underrightarrow{t^o}SO_2\)

\(4P+5O_2\underrightarrow{t^o}2P_2O_5\)

\(C+O_2\underrightarrow{t^o}CO_2\)

b) 

\(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)

\(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)

\(Cu+\dfrac{1}{2}O_2\underrightarrow{t^o}CuO\)