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Câu 5)

$\text{a) Fe+Cu(NO3)2$\rightarrow$Fe(NO3)2+Cu↓}$

$\leftrightarrow$ $\text{Kim loại+muối$\rightarrow$muối mới+kim loại mới}$

$\text{b) Fe+2HCl$\rightarrow$FeCl2+H2}$

$\leftrightarrow$ $\text{Kim loại+Axit$\rightarrow$Muối+H2}$

$\text{c) 2Fe+3Cl2$\xrightarrow{t^o}$2FeCl3}$

$\leftrightarrow$ $\text{Kim loại+Phi kim$\rightarrow$Muối}$

$\text{d) Fe+2AgNO3$\rightarrow$Fe(NO3)2+2Ag↓}$

$\leftrightarrow$ $\text{Kim loại+muối$\rightarrow$muối mới+kim loại mới}$

Câu 6)

a)

$\text{1) 2Al2O3$\xrightarrow[\text{criolit}]{\text{đpnc}}$4Al+3O2}$

$\text{2) 2Al+6HNO3$\rightarrow$2Al(NO3)3+3H2}$

$\text{3) Al(NO3)3+3NaOH$\rightarrow$3NaNO3+Al(OH)3↓}$

$\text{4) 2Al(OH)3$\xrightarrow{t^o}$Al2O3+3H2O}$

$\text{5) Al2O3+3H2SO4$\rightarrow$Al2(SO4)3+3H2}$

$\text{6) Al2(SO4)3+3BaCl2$\rightarrow$3BaSO4+2AlCl3}$

$\text{7) 2AlCl3+3Mg$\rightarrow$3MgCl2+2Al↓}$

$\text{8) 2Al+3CuSO4$\rightarrow$Al2(SO4)3+3Cu}$

b)

$\text{1) 2Fe+3Cl2$\xrightarrow{t^o}$2FeCl3}$

$\text{2) FeCl3+3NaOH$\rightarrow$3NaCl+Fe(OH)3↓}$

$\text{3) 2Fe(OH)3$\xrightarrow{t^o}$Fe2O3+3H2O}$

$\text{4) Fe2O3+3CO$\xrightarrow{t^o}$2Fe+3CO2}$

$\text{5) Fe+2HCl$\rightarrow$FeCl2+H2}$

$\text{6) FeCl2+2AgNO3$\rightarrow$Fe(NO3)2+2AgCl↓}$

$\text{7) Fe(NO3)2+Na2CO3$\rightarrow$FeCO3↓+2NaNO3}$

$\text{8) FeCO3+H2SO4$\rightarrow$FeSO4+H2O+CO2↑}$

Đáp án:

Giải thích các bước giải:

 a) dd Cu$(NO_3)_2$

PTHH:Fe+Cu$(NO_3)_2$→Fe$(NO_3)_2$+Cu

b) dd HCl

Fe+2HCl→Fe$Cl_2$+$H_2$

c) khí $Cl_2$

2Fe+3$Cl_2$→2$FeCl_3$

d) dd Ag$NO_3$

PTHH: Fe+2Ag$NO_3$→Fe$(NO_3)_2$+2Ag

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#Heiz Gudeian