hoan thanh cac PTHH sau: 1) Fe -> FeCl3 ->Fe(OH)3 -> Fe2O3 -> Fe2(SO4)3 -> FeCl3/ 2) Cu -> CuO -> CuCl2 -> Cu(OH)2 -> CuO -> Cu -> CuSO4 3) Al -> Al2O

hoan thanh cac PTHH sau:
1) Fe -> FeCl3 ->Fe(OH)3 -> Fe2O3 -> Fe2(SO4)3 -> FeCl3/
2) Cu -> CuO -> CuCl2 -> Cu(OH)2 -> CuO -> Cu -> CuSO4
3) Al -> Al2O3 -> Al2(SO4)3 -> AlCl3 -> Al(NO3)3 -> Al(OH)3 -> Al2O3
4) Na -> Na2O -> NaOH -> Na2CO3 -> NaCl -> NaNO3.
Moi mot mui ten tuong ung vs 1 pt phan ung.

0 bình luận về “hoan thanh cac PTHH sau: 1) Fe -> FeCl3 ->Fe(OH)3 -> Fe2O3 -> Fe2(SO4)3 -> FeCl3/ 2) Cu -> CuO -> CuCl2 -> Cu(OH)2 -> CuO -> Cu -> CuSO4 3) Al -> Al2O”

  1. 1.

    $2Fe+3Cl_2\buildrel{{t^o}}\over\to 2FeCl_3$

    $FeCl_3+3KOH\to Fe(OH)_3+3KCl$

    $2Fe(OH)_3\buildrel{{t^o}}\over\to Fe_2O_3+3H_2O$

    $Fe_2O_3+3H_2SO_4\to Fe_2(SO_4)_3+3H_2O$

    $Fe_2(SO_4)_3+3BaCl_2\to 3BaSO_4+2FeCl_3$

    2.

    $2Cu+O_2\buildrel{{t^o}}\over\to 2CuO$

    $CuO+2HCl\to CuCl_2+H_2O$

    $CuCl_2+2NaOH\to Cu(OH)_2+2NaCl$

    $Cu(OH)_2\buildrel{{t^o}}\over\to CuO+H_2O$

    $CuO+H_2\buildrel{{t^o}}\over\to Cu+H_2O$

    $Cu+Fe_2(SO_4)_3\to CuSO_4+2FeSO_4$

    3.

    $4Al+3O_2\buildrel{{t^o}}\over\to 2Al_2O_3$

    $Al_2O_3+3H_2SO_4\to Al_2(SO_4)_3+3H_2O$

    $Al_2(SO_4)_3+3BaCl_2\to 2AlCl_3+3BaSO_4$

    $AlCl_3+3AgNO_3\to 3AgCl+Al(NO_3)_3$

    $Al(NO_3)_3+3KOH\to Al(OH)_3+3KNO_3$

    $2Al(OH)_3\buildrel{{t^o}}\over\to Al_2O_3+3H_2O$

    4.

    $4Na+O_2\buildrel{{t^o}}\over\to 2Na_2O$

    $Na_2O+H_2O\to 2NaOH$

    $2NaOH+CO_2\to Na_2CO_3+H_2O$

    $Na_2CO_3+2HCl\to 2NaCl+CO_2+H_2O$

    $NaCl+AgNO_3\to AgCl+NaNO_3$

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  2. Đáp án:

     

    Giải thích các bước giải:

    \(\begin{array}{l} 1)\\ 2Fe+3Cl_2\xrightarrow{t^o} 2FeCl_3\\ FeCl_3+3NaOH\to Fe(OH)_3↓+3NaCl\\ 2Fe(OH)_3\xrightarrow{t^o} Fe_2O_3+3H_2O\\ Fe_2O_3+3H_2SO_4\to Fe_2(SO_4)_3+3H_2O\\ Fe_2(SO_4)_3+3BaCl_2\to 3BaSO_4↓+2FeCl_3\\ 2)\\ 2Cu+O_2\xrightarrow{t^o} 2CuO\\ CuO+2HCl\to CuCl_2+H_2O\\ CuCl_2+2NaOH\to Cu(OH)_2+2NaCl\\ Cu(OH)_2\xrightarrow{t^o} CuO+H_2O\\ CuO+H_2\xrightarrow{t^o} Cu+H_2O\\ Cu+2H_2SO_{4\ \text{đ,n}}\xrightarrow{t^o} CuSO_4+SO_2+2H_2O\\ 3)\\ 4Al+3O_2\xrightarrow{t^o} 2Al_2O_3\\ Al_2O_3+3H_2SO_4\to Al_2(SO_4)_3+3H_2O\\ Al_2(SO_4)_3+3BaCl_2\to 3BaSO_4↓+2AlCl_3\\ AlCl_3+3AghNO_3\to Al(NO_3)_3+3AgCl↓\\ Al(NO_3)_3+3NaOH\to Al(OH)_3↓+3NaNO_3\\ 2Al(OH)_3\xrightarrow{t^o} Al_2O_3+3H_2O\\ 4)\\ 4Na+O_2\xrightarrow{t^o} 2Na_2O\\ Na_2O+H_2O\to 2NaOH\\ 2NaOH+CO_2\to Na_2CO_3+H_2O\\ Na_2CO_3+Bal_2\to 2NaCl+BaCO_3↓\\ NaC+AgNO_3\to AgCl↓+NaNO_3\end{array}\)

    chúc bạn học tốt!

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