bài 4:

$\rm a.Fe+CuSO_4 \to FeSO_4+Cu$

$\rm b.Zn+2AgNO_3 \to Zn(NO_3)_2+2Ag$

$\rm c.H_2SO_4+Na_2CO_3 \to Na_2SO_4+CO_2+H_2O$

$\rm d.HCl+AgNO_3 \to AgCl+HNO_3$

$\rm e.FeCl_3+3NaOH \to Fe(OH)_3+3NaCl$

$\rm f.CuCl_2+2KOH \to Cu(OH)_2+2KCl$

$\rm g.NaCl+AgNO_3 \to AgCl+NaNO_3$

$\rm h.Na_2SO_4+BaCl_2 \to BaSO_4+2NaCl$

$\rm i.K_2CO_3+Ca(NO_3)_2 \to CaCO_3+2KNO_3$

bài 5:

sodium fluoride : $\rm NaF$

copper (II) chloride :$\rm CuCl_2$

calcium sulfite: $\rm CaSO_3$

barium hydrogen carbonate :$\rm Ba(HCO_3)_2$

potassium hydrogen sulfate: $\rm KHSO_4$

Sodium sulfate: $\rm Na_2SO_4$

Potassium chloride: $\rm KCl$

Zinc chloride :$\rm ZnCl_2$

Magnesium chloride :$\rm MgCl_2$

Aluminium sulfate :$\rm Al_2(SO_4)_3$

Calcium chloride :$\rm CaCl_2$

 Copper(II) sulfate: $\rm CuSO_4$

Aluminium nitrate: $\rm Al(NO_3)_3$

Bài 4:

$\rm a)\ Fe+CuSO_4\to FeSO_4+Cu\\b)\ Zn+2AgNO_3\to Zn(NO_3)_2+2Ag\\c)\\H_2SO_4+2Na_2CO_3\to 2NaHCO_3+Na_2SO_4\\H_2SO_4+2NaHCO_3\to Na_2SO_4+2CO_2+2H_2O\\d)\ HCl+AgNO_3\to AgCl+HNO_3\\e)\ FeCl_3+3NaOH\to Fe(OH)_3+3NaCl\\f)\ CuCl_2+2KOH\to Cu (OH)_2+2KCl\\g)\ NaCl+AgNO_3\to NaNO_3+AgCl\\h)\ Na_2SO_4+BaCl_2\to BaSO_4+2NaCl\\i)\ K_2CO_3+Ca (NO_3)_2\to CaCO_3+2KNO_3$

Bài 5:

$\rm NaF: sodium\ fluoride\\CuCl_2:copper\ (II)\ chloride\\CaSO_3:calcium\ sulfite\\Ba(HCO_3)_2:barium\ hydrogen\ carbonate\\KHSO_4:potassium\ hydrogen\ sulfate\\Na_2SO_4:sodium\ sulfate\\KCl:potassium\ chloride\\ZnCl_2:zinc\ chloride\\MgCl_2:magnesium\ chloride\\Al_2(SO_4)_3:aluminium\ sulfate\\CaCl_2:calcium\ chloride\\CuSO_4:copper\ (II)\ sulfate\\Al(NO_3)_3:aluminium\ nitrate$