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11 tháng 12 2021

\(2Al+3H_2SO_4\to Al_2(SO_4)_3+3H_2\\ Al_2(SO_4)_3+3BaCl_2\to 2AlCl_3+3BaSO_4\downarrow\\ AlCl_3+3NaOH\to Al(OH)_3\downarrow +3NaCl\\ 2Al(OH)_3\xrightarrow{t^o}Al_2O_3+3H_2O\\ 2Al_2O_3\xrightarrow{đpnc}4Al+3O_2\)

7 tháng 1 2022

\(\left(1\right)2Al_2O_3\xrightarrow[Na_3AlF_6]{đpnc}4Al+3O_2\uparrow\)

\(\left(2\right)2Al+3H_2SO_4--->Al_2\left(SO_4\right)_3+3H_2\uparrow\)

\(\left(3\right)Al_2\left(SO_4\right)_3+3BaCl_2--->3BaSO_4\downarrow+2AlCl_3\)

\(\left(4\right)AlCl_3+3NaOH--->Al\left(OH\right)_3\downarrow+3NaCl\)

29 tháng 12 2020

4Al+3O2----to--->2Al2O3

Al2O3 +3H2SO4----->Al2(SO4)3+3H2O

Al2(SO4)3+3BaCl2------>2AlCl3+3BaSO4

2AlCl3+3Ca(OH)2---->2Al(OH)3+3CaCl2

Al(OH)3+3HNO3---->Al(NO3)3+3H2O

2Al(NO3)3+3Mg----->3Mg(NO3)2+2Al

2Al+3H2SO4------->Al2(SO4)3+3H2

Al2(SO4)3+3Ca(OH)2------>2Al(OH)3+3CaSO4

2Al(OH)3-----to----->Al2O3+3H2O

2Al2O3----\(\dfrac{t^o}{criolit}\)---->4Al+3O2

2Al+2H2O+2NaOH------>2NaAlO2+3H2

29 tháng 12 2020

4Al+3O2\(\underrightarrow{t^o}\) 2Al2O3

Al2O3+H2SO4 —> Al2(SO4)3+3H2O

Al2(SO4)3+3BaCl2–>3BaSO4\(\downarrow\)+2AlCl3

AlCl3+3NaOH—>Al(OH)3\(\downarrow\)+3NaCl

Al(OH)3+HNO3 —>Al(NO3)3+NO2\(\uparrow\)+H2O

2Al(NO3)3+3Mg—>3Mg(NO3)2+2Al\(\downarrow\)

2Al+3H2SO4–>Al2(SO4)3+3H2\(\uparrow\)

Al2(SO4)3+6NaOH—>2Al(OH)3+3Na2SO4

2Al(OH)3\(\underrightarrow{t^o}\)Al2O3+3H2O

2Al2O3\(\xrightarrow[criolit]{đien.phan.nong.chay}\)

4Al+3O2

2Al+2NaOH+2H2O—>2NaAlO2+3H2

13 tháng 12 2023

\(a,2Al_2O_3\rightarrow\left(đpnc,criolit\right)4Al+3O_2\\ 2Al+6HCl\rightarrow2AlCl_3+3H_2\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ 2Al\left(OH\right)_3\rightarrow\left(t^o\right)Al_2O_3+3H_2O\\ Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

13 tháng 12 2023

\(b,2Cu+O_2\rightarrow\left(t^o\right)2CuO\\ CuO+2HCl\rightarrow CuCl_2+H_2O\\ CuCl_2+2KOH\rightarrow Cu\left(OH\right)_2+2KCl\\ Cu\left(OH\right)_2\rightarrow\left(t^o\right)CuO+H_2O\)

28 tháng 12 2021

1) \(2Al+3Cl_2\underrightarrow{t^o}2AlCl_3\)

2) \(P_2O_5+3Ca\left(OH\right)_2\rightarrow Ca_3\left(PO_4\right)_2+3H_2O\)

3) \(Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\downarrow\)

4) \(Zn\left(OH\right)_2\underrightarrow{t^o}ZnO+H_2O\)

5) \(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

6) \(Zn+FeSO_4\rightarrow ZnSO_4+Fe\)

21 tháng 12 2021

\(a,2Fe+3Cl_2\xrightarrow{t^o}2FeCl_3\\ FeCl_3+3NaOH\to Fe(OH)_3\downarrow+3NaCl\\ 2Fe(OH)_3\xrightarrow{t^o}Fe_2O_3+3H_2O\\ Fe_2O_3+3CO\xrightarrow{t^o}2Fe+3CO_2\\ Fe+H_2SO_4\to FeSO_4+H_2\\ FeSO_4+BaS\to BaSO_4\downarrow+FeS\\ FeS+2HCl\to FeCl_2+H_2\\ FeCl_2+2AgNO_3\to Fe(NO_3)_2+2AgCl\downarrow\)

\(b,2Al_2O_3\xrightarrow[criolit]{đpnc}4Al+3O_2\\ 2Al+3H_2SO_4\to Al_2(SO_4)_3+3H_2\\ Al_2(SO_4)_3+6NaOH\to 2Al(OH)_3\downarrow+3Na_2SO_4\\ Al(OH)_3+3HNO_3\to Al(NO_3)_3+3H_2O\\ 2Al(NO_3)_3+3Mg\to 3Mg(NO_3)_2+2Al\\ Al+NaOH+H_2O\to NaAlO_2+\dfrac{3}{2}H_2\)

20 tháng 12 2023

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

\(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

\(Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\)

\(AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\)

\(2Al\left(OH\right)_3\underrightarrow{^{^{t^o}}}Al_2O_3+3H_2O\)

\(2NaOH+Al_2O_3\rightarrow2NaAlO_2+H_2O\)