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a) 4FeS2+11O2\(\overset{t^0}{\rightarrow}\)2Fe2O3+8SO2
2SO2+O2\(\overset{V_2O_5,t^0}{\rightarrow}2SO_3\)
SO3+H2O\(\rightarrow\)H2SO4
Cu+ 2H2SO4đ\(\overset{t^0}{\rightarrow}\)CuSO4+SO2+H2O
b)
AlCl3+3NaOH\(\rightarrow\)Al(OH)3+3NaCl
2Al(OH)3\(\overset{t^0}{\rightarrow}Al_2O_3+3H_2O\)
Al2O3+3H2SO4\(\rightarrow\)Al2(SO4)3+3H2O
Al2(SO4)3+3BaCl2\(\rightarrow\)3BaSO4+2AlCl3
1) \(\overset{+2}{Fe}\overset{-1}{S_2}+\overset{0}{O_2}\rightarrow\overset{+3}{Fe_2}\overset{-2}{O_3}+\overset{+4}{S}\overset{-2}{O_2}\)
quá trình OXH :\(\overset{+2}{Fe}\overset{-1}{S_2}\rightarrow\overset{+3}{Fe}+\overset{+4}{2S}+11e|\times4\)
quá trình khử : \(\overset{0}{2O}+2.2e\rightarrow\overset{-2}{2O}|\times11\)
\(\Rightarrow4FeS_2+11O_2\rightarrow2Fe_2O_3+8SO_2\)2) \(\overset{+2}{Fe}\overset{-2}{S}+H\overset{+5}{N}O_3\rightarrow\overset{+3}{Fe}\left(\overset{+5}{N}O_3\right)_3+\overset{+2}{N}\overset{-2}{O}+H_2O+H_2\overset{+6}{S}O_4\)
quá trình OXH : \(\overset{+2}{Fe}\overset{-2}{S}\rightarrow\overset{+3}{Fe}+\overset{+6}{S}+9e|\times1\)
quá trình khử : \(\overset{+5}{N}+3e\rightarrow\overset{+2}{N}|\times3\)
\(\Rightarrow FeS+6HNO_3\rightarrow Fe\left(NO_3\right)_3+3NO+2H_2O+H_2SO_4\)
CÒN ĐỂ CHIỀU MK LM CHO NHA
2Cu + O2 ➝ 2CuO
CuO + H2SO4 ➝ CuSO4 + H2O
CuSO4 + BaCl2 ➝ CuCl2 + BaSO4↓
CuCl2 + 2AgNO3 ➝ Cu(NO3)2 + 2AgCl↓
Cu(NO3)2 +2NaOH➝Cu(OH)2↓+ 2NaNO3
Cu(OH)2 \(\underrightarrow{t^o}\)CuO + H2O
CuO + H2 ➝ Cu + H2O
Cu + 2H2SO4(đ) \(\xrightarrow[]{t^o}\) CuSO4 + SO2 + 2H2O
CuSO4 + Fe ➝ Cu + FeSO4
Cu + 2H2SO4(đ) \(\xrightarrow[]{t^o}\) CuSO4 + SO2 + 2H2O
a) \(S+O2\rightarrow SO2\)
2SO2+O2---->2SO3
SO3+H2O--->H2SO4
H2SO4+Na2O---->Na2SO4+H2O
Na2SO4+BaCl2---->2NaCl+BaSO4
b) 2Ca+O2--->2CaO
CaO+H2O--->Ca(OH)2
Ca(OH)2+CO2---->CaCO3+H2O
CaCO3+H2SO4----> CaSO4+H2O+CO2
CaSO4+BaCl2--->CaCl2+BaSO4
a,
\(1.\text{O2 + S → SO2}\)
\(2.\text{O2 + 2SO2 ↔ 2SO3}\)
\(3.\text{H2O + SO3 → H2SO4}\)
\(3.\text{H2SO4 + 2NaOH → 2H2O + Na2SO4}\)
\(4.\text{BaCl2 + Na2SO4 → 2NaCl + BaSO4}\)
b,
\(1.2Ca+O2\rightarrow2CaO\)
\(2.\text{CaO + H2O → Ca(OH)2}\)
\(3.\text{Ca(OH)2 + CO2 → CaCO3 + H2O}\)
\(4.\text{CaCO3 + H2SO4 → H2O + CO2 + CaSO4}\)
\(5.\text{BaCl2 + CaSO4 → CaCl2 + BaSO4}\)
2Al + 6H2SO4 → Al2(SO4)3 + 6H2O
(5x-2y) Al + (18x-6y) HNO3 → (5x-2y) Al(NO3)2 + 3NxOy + (9x-3y) H2O
2M + 2n H2SO4 → M2(SO4)n + nSO2 +2n H2O
a)
(1) \(2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)
(2) \(SO_3+H_2O\rightarrow H_2SO_4\)
(3) \(Na_2SO_3+H_2SO_4\rightarrow Na_2SO_4+SO_2+H_2O\)
(4) \(SO_2+2KOH\rightarrow K_2SO_3+H_2O\)
(5) \(K_2SO_3+H_2SO_4\rightarrow K_2SO_4+SO_2+H_2O\)
b)
\(SO_3+2NaOH\rightarrow Na_2SO_4+H_2O\)