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[kobato_2509]

$2NaOH + Cu(NO_3)_2 \rightarrow 2NaNO_3 + Cu(OH)_2$
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[phamvananh9]

$2NaOH + Cu(NO_3)_2 \rightarrow 2NaNO_3 + Cu(OH)_2$
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[TEX][/TEX]
$ Cu(OH)_2 + H_2SO_4 --> CuSO_4 + 2H_2O$
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[kobato_2509]

$CuSO_4 + BaCl_2 \rightarrow CuCl_2 + BaSO_4$
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[lisel]

2NaOH + Cl2 ===> NaClO + NaCl + H2O@};-@};-@};-@};-@};-@};-

 

[kobato_2509]

$NaCl + AgNO_3 \rightarrow NaNO_3 + AgCl$
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[kagaminex]

$2NaNO_3--t^o-->2NaNO_2+O_2$
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[kobato_2509]

$O_2 + 2H_2 \rightarrow 2H_2O$
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[kagaminex]

$H_2O+BaO---->Ba(OH)_2$
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[kobato_2509]

$Ba(OH)_2 + 2HCl \rightarrow BaCl_2 + 2H_2O$
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[kagaminex]

$BaCl_2+Ag_2SO_4------>2AgCl+BaSO_4$
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[kobato_2509]

$ BaSO_4 + 4C ---> BaS + 4CO$
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[kagaminex]

$FeO+CO----> Fe+CO_2$
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[kobato_2509]

$CO_2 + C \rightarrow 2CO$
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[kagaminex]

$CO_2$ không tác dụng với $O_2$ đâu
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[lisel]

Fe + 2HCl ----> FeCl2 + H2 >->->->->-

 

[kobato_2509]

Fe + 2HCl ----> FeCl2 + H2 >->->->->-

Fe với HCl ở đâu ra
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[buivanbao123]

$co+0_2------>co_2$

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[kobato_2509]

$CO_2 + 2NaOH \rightarrow Na_2CO_3 + H_2O$
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[haiyen621]

[TEX]H_2O + Ba[/TEX]-------->[TEX]BaO + H_2[/TEX]
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[kobato_2509]

[TEX]H_2O + Ba[/TEX]-------->[TEX]BaO + H_2[/TEX]
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Cái này không tồn tạ ra $Ba(OH)_2$ chứ ko phải BaO