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28 tháng 12 2022

$4Al + 3O_2 \xrightarrow{t^o} 2Al_2O_3$
$Al_2O_3 + 6HCl \to 2AlCl_3 + 3H_2O$
$AlCl_3 + 3KOH \to Al(OH)_3 + 3KCl$
$2Al(OH)_3 \xrightarrow{t^o} Al_2O_3 + 3H_2O$
$2Al_2O_3 \xrightarrow{dpnc} 4Al + 3O_2$

22 tháng 11 2021

\(4Al+3O_2-^{t^o}\rightarrow2Al_2O_3\\ Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ 2Al\left(OH\right)_3-^{t^o}\rightarrow Al_2O_3+3H_2O\\ Al_2O_3-^{đpnc,criolit}\rightarrow2Al+\dfrac{3}{2}O_2\\ 2Al+6HCl\rightarrow2AlCl_3+3H_2\)

22 tháng 11 2021

\(Al\underrightarrow{1}Al_2O_3\underrightarrow{2}AlCl_3\underrightarrow{3}Al\left(OH\right)_3\underrightarrow{4}Al_2O_3\underrightarrow{5}Al\underrightarrow{6}AlCl_3\)

(1) \(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)

(2) \(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)

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

(4) \(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)

(5) \(2Al_2O_3\xrightarrow[criolit]{điện.phân.nóng.chảy}4Al+3O_2\)

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

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24 tháng 3 2020

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

\(Al_2\left(SO_4\right)_3+3Cu\rightarrow3CuSO_4+2Al\)

\(4Al+3O_2\rightarrow2Al_2O_3\)

\(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)

\(AlCl_3+3H_2O\rightarrow Al\left(OH\right)_3+3HCl\)

\(2Al\left(OH\right)_3\rightarrow Al_2O_3+3H_2O\)

\(2Al_2O_3\rightarrow4Al+3O_2\)

\(2Al+3Cl_2\rightarrow2AlCl_3\)

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

18 tháng 12 2023

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

\(AlCl_3+3NaOH\rightarrow3NaCl+Al\left(OH\right)_3\)

\(2Al\left(OH\right)_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+6H_2O\)

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

\(AlCl_3+3AgNO_3\rightarrow3AgCl+Al\left(NO_3\right)_3\)

\(Al\left(NO_3\right)_3+3KOH\rightarrow3KNO_3+Al\left(OH\right)_3\)

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

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

18 tháng 12 2023

\(Al+\dfrac{3}{2}Cl_2\rightarrow AlCl_3\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ 2Al\left(OH\right)_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+6H_2O\\ Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\\ AlCl_3+3AgNO_3\rightarrow Al\left(NO_3\right)_3+3AgCl\\ Al\left(NO_3\right)_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaNO_3\\ 2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\\ Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

23 tháng 11 2023

\(4Al+3O_2\xrightarrow[t^0]{}2Al_2O_3\\ Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ 2Al\left(OH\right)_3\xrightarrow[t^0]{}Al_2O_3+3H_2O\\ 2Al_2O_3\xrightarrow[criolit]{đpnc}4Al+3O_2\\ 2Al+2NaOH+2H_2O\rightarrow2NaAlO_2+3H_2\)

23 tháng 11 2023

H2 k khử được oxit lưỡng tính đâu

Sửa lại pthh dòng 2 từ cuối lên là Al2O3 đpnc-> Al+O2 

20 tháng 12 2023

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

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

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

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

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

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