化学方程式配平练习题
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Mg+ O 2 =点燃生成 MgO Mg + O 2=点燃生成 MgO Fe + O 2=点燃生成 Fe 3O 4 Al + O
2 =点燃生成 Al 2O
3 H 2 + O 2=点燃生成 H 2O P + O 2=点燃生成 P 2O 5
KMnO 4 加热→ K 2MnO 4 + MnO 2 + O 2↑ KClO 3 MnO 2→ KCl+ O 2↑ C+ Fe 2O 3 高温 Fe + CO 2↑ CO+ Fe 2O 3 高温 Fe + CO 2
NaOH + CuSO 4 == Cu(OH)2↓+ Na 2SO 4 C 2H 5OH + O 2 点燃 CO 2 + H 2O
Na 2CO 3 + HCl === NaCl + H 2O + CO 2↑ Mg + O 2 点燃 MgO Fe + O 2 点燃 Fe 3O 4 Cu + O 2 加热 CuO Al + O 2 点燃 Al 2O 3 H 2 + O 2 点燃 H 2O P + O 2 点燃 P 2O 5 CO + O 2 点燃 CO 2
CH4 + O 2 点燃 CO 2 + H 2O C 2H 5OH + O 2 点燃 CO 2 + H 2O KClO 3 ==== KCl + O 2 ↑
KMnO 4 加热 K 2MnO 4 + MnO 2 + O 2↑ H 2 + CuO 加热 Cu + H 2O C+ CuO 高温 Cu + CO 2↑ C+ Fe 2O 3 高温 Fe + CO 2↑ C+ Fe 3O 4 高温 Fe + CO 2↑ CO+ Fe 2O 3 高温 Fe + CO 2 CO+ Fe 3O 4 高温 Fe + CO 2 Al + H 2SO 4 = Al 2(SO 4)3 + H 2↑ Zn + HCl === ZnCl 2 + H 2↑ Fe + HCl === FeCl 2 + H 2↑ Mg+ HCl === MgCl 2 + H 2↑
Al + HCl == AlCl 3 + H 2↑ Fe 2O 3 + HCl === FeCl 3 + H 2O Fe 2O 3 + H 2SO 4 === Fe 2(SO 4)3 + H 2O CuO + HClΔ ==== CuCl 2 + H 2O NaOH + CO 2 ==== Na 2CO 3 + H 2O NaOH + SO 2 ==== Na 2SO 3 + H 2O NaOH + SO 3 ==== Na 2SO 4 + H 2O HCl + Cu(OH)2 ==== CuCl 2 + H 2O HCl + Ca(OH)2 ==== CaCl 2 + H 2O HCl + Fe(OH)3 ==== FeCl 3 + H 2O HCl + Al(OH)3 ==== AlCl 3 + H 2O H 2SO 4 + NaOH ==== Na 2SO 4 + H 2O
H 2SO 4 + KOH ==== K 2SO 4 + H 2
O
H 2SO 4 + Cu(OH)2 ==== CuSO 4 + H 2O
H 2
SO 4
+ Fe(OH)3
==== Fe 2
(SO 4
)3
+ H 2
O
Mg(0H)2+ HCl= MgCl 2+ H 2O
CaCO 3 + HCl === CaCl 2 + H 2O + CO 2↑ Na 2CO 3 + HCl === NaCl + H 2O + CO 2↑ H 2SO 4 + BaCl 2 ==== BaSO 4 ↓+ HCl NaOH + CuSO 4 ==== Cu(OH)2↓ + Na 2SO 4 NaOH + FeCl 3 ==== Fe(OH)3↓ + NaCl NaOH + MgCl 2 ==== Mg(OH)2↓ + NaCl NaOH + CuCl 2 ==== Cu(OH)2↓ + NaCl Ca(OH)2 + Na 2CO 3 === CaCO 3↓+ NaOH Mg+ O 2点燃= MgO Hg+ O 2点燃或Δ= HgO Cu+ O 2点燃或Δ= CuO Al+ O 2点燃或Δ= Al 2O 3 Fe+ O 2点燃= Fe 3O 4 Fe + O 2高温 Fe 2O 3 C 2H 2+ O 2点燃= H 2O+ CO 2 KClO 3MnO 2 Δ= KCl + O 2↑ KMnO 4Δ = K2MnO 4+ MnO 2+ O 2↑ HgOΔ= Hg+ O 2↑ H 2O 通电= H 2↑+ O 2↑
Cu 2(OH)2CO 3Δ= CuO+ H 2O+ CO 2↑
NH
4HCO
3
Δ= NH
3
↑+ H
2
O + CO
2
↑
Zn+ H
2SO
4
= ZnSO
4
+ H
2
↑
Fe+ H
2SO
4
= FeSO
4
+ H
2
↑
Mg+ H
2SO
4
= MgSO
4
+ H
2
↑
Al+ H
2SO
4
= Al
2
(SO
4
)
3
+ H
2
↑
Fe
2O
3
+ H
2
Δ = Fe+ H
2
O
Fe
3O
4
+ H
2
Δ= Fe+ H2O
WO
3+ H
2
Δ= W + H
2
O
MoO
3+ H
2
Δ= Mo + H
2
O
Na+ Cl
2
点燃= NaCl
H2+Cl
2
点燃或光照=2HCl
CuSO
4+ NaOH= Cu(OH)
2
↓+ Na
2
SO
4
C + O
2
点燃= CO
CO+ O
2点燃= CO
2
C + CuO 高温= Cu+ CO
2
↑
Fe
2O
3
+ C 高温= Fe+ CO
2
↑
Fe
3O
4
+ C高温= Fe + CO
2
↑
Ca(OH)
2+CO
2
= CaCO
3
↓+ H
2
O
CaCO
3+ H
2
O+ CO
2
= Ca(HCO
3
)
2
Ca(HCO
3)
2
Δ = CaCO
3
↓+ H
2
O+ CO
2
↑
NaHCO
3Δ= Na
2
CO
3
+ H
2
O+ CO
2
↑
CaCO
3高温= CaO+ CO
2
↑
CaCO
3+ HCl= CaCl
2
+ H
2
O+ CO
2
↑
Na
2CO
3
+ H
2
SO
4
= Na
2
SO
4
+ H
2
O+ CO
2
↑
Na
2CO
3
+ HCl= NaCl+ H
2
O+ CO
2
↑
MgCO
3+ HCl= MgCl
2
+ H
2
O+ CO
2
↑
CuO + COΔ Cu + CO
2
Fe
2O
3
+ CO高温 = Fe+ CO
2
Fe
3O
4
+ CO高温 = Fe+ CO
2
WO
3+ CO高温 = W+ CO
2
CH
3COOH+ NaOH= CH
3
COONa+ H
2
O
CH
3OH+ O
2
点燃 CO
2
+ H
2
O
C
2H
5
OH+ O
2
点燃 CO
2
+ H
2
O
Fe+ CuSO
4= Cu+ FeSO
4
Mg+ FeSO
4= Fe+ MgSO
4
Cu+ AgNO
3= Ag+ Cu(NO
3
)
2
Zn+ CuSO
4
= Cu+ ZnSO
4
Fe
2
O
3
+ HCl= FeCl
3
+ H
2
O
Al
2
O
3
+ HCl= AlCl
3
+ H
2
O
Na
2
O+ HCl= NaCl+ H
2
O
CuO+ HCl= CuCl
2
+ H
2
O
ZnO+ HCl= ZnCl
2
+ H
2
O
MgO+ HCl= MgCl
2
+ H
2
O
CaO+ HCl= CaCl
2
+ H
2
O
NaOH+ HCl= NaCl+ H
2
O
Cu(OH)
2
+ HCl= CuCl
2
+ H
2
O
Mg(OH)
2
+ HCl= MgCl
2
+ H
2
O
Al(OH)
3
+ HCl= AlCl
3
+ H
2
O
Fe(OH)
3
+ HCl= FeCl
3
+ H
2
O
Ca(OH)
2
+ HCl= CaCl
2
+ H
2
O
HCl+ AgNO
3
= AgCl↓+ HNO
3
Fe
2
O
3
+ H
2
SO
4
= Fe
2
(SO
4
)
3
+ H
2
O
Al
2
O
3
+ H
2
SO
4
= Al
2
(SO
4
)
3
+ H
2
O
CuO+ H
2
SO
4
= CuSO
4
+ H
2
O
ZnO+ H
2
SO
4
= ZnSO
4
+ H
2
O
MgO+ H
2
SO
4
= MgSO
4
+ H
2
O
NaOH+ H
2
SO
4
= Na
2
SO
4
+ H
2
O
Cu(OH)
2
+ H
2
SO
4
= CuSO
4
+ H
2
O
Ca(OH)
2
+ H
2
SO
4
= CaSO
4
+ H
2
O
Mg(OH)
2
+ H
2
SO
4
= MgSO
4
+ H
2
O
Al(OH)
3
+ H
2
SO
4
= Al
2
(SO
4
)
3
+ H
2
O
Fe(OH)
3
+ H
2
SO
4
= Fe
2
(SO
4
)
3
+ H
2
O
Ba(OH)
2
+ H
2
SO
4
= BaSO
4
↓+ H
2
O
BaCl
2
+ H
2
SO
4
= BaSO
4
↓+ HCl
Ba(NO
3
)
2
+ H
2
SO
4
= BaSO
4
↓+ HNO
3
Na
2
O+ HNO
3
= NaNO
3
+ H
2
O
CuO+ HNO
3
= Cu(NO
3
)
2
+ H
2
O
ZnO+ HNO
3
= Zn(NO
3
)
2
+ H
2
O
MgO+ HNO
3
= Mg(NO
3
)
2
+ H
2
O
CaO+ HNO3= Ca(NO
3
)
2
+ H
2
O
NaOH+ HNO
3
= NaNO
3
+ H
2
O
Cu(OH)
2
+ HNO
3
= Cu(NO
3
)
2
+ H
2
O