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Những câu hỏi liên quan
7 tháng 1 2022
a) \(2KClO_3\underrightarrow{t^o}2KCl+3O_2\)
b) \(Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow3BaSO_4\downarrow+2FeCl_3\)
c) \(2C_xH_y+\dfrac{4x+y}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)
13 tháng 5 2022
\(a,3Fe+2O_2\xrightarrow[]{t^o}Fe_3O_4\) (phản ứng hoá hợp)
\(b,2KClO_3\xrightarrow[MnO_2]{t^o}2KCl+3O_2\uparrow\) (phản ứng phân huỷ)\
\(c,Zn+CuCl_2\rightarrow ZnCl_2+Cu\downarrow\) (phản ứng thế)
13 tháng 5 2022
a: \(3Fe+2O_2\rightarrow Fe_3O_4\)
b: \(2KClO_3\rightarrow2KCl+3O_2\)
c: \(Zn+CuCl_2\rightarrow ZnCl_2+Cu\)
27 tháng 6 2019
Phản ứng a) 2Mg + O2 → 2MgO. Phản ứng oxi hóa khử ( phản ứng hóa hợp).
Phản ứng b) là phản ứng oxi- hóa khử (phản ứng phân hủy).
Phản ứng c) là phản ứng thế.
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Al2(SO4)3 + ...
9 tháng 9 2021
Zn + 2HCl → ZnCl2 + H2
2H2 + O2 → 2H2O
2KClO3 ---to→ 2KCl + 3O2
2Al + 3H2SO4 → Al2(SO4)3 + 3H2
CuO + H2 → Cu + H2O
19 tháng 4 2023
a) 3Fe + 2O2 → Fe3O4.(PỨ hoá hợp)
b)\(2KClO_3\underrightarrow{t^o}2KCl+3O_2\uparrow\) (PỨ Phân huỷ)
c) Zn + CuCl2 → ZnCl2 + Cu (PỨ thế)
d)4 P + 5O2 → 2 P2O5 (PỨ hoá hợp)
đ) KMnO4 →K2MnO4 + MnO2 + O2.(Pứ phân huỷ)
e) 2Al + 3Cl2 → 2AlCl3 (PỨ Hoá hợp)
f) 2Zn + O2 → 2ZnO. (PỨ hoá hợp)
g) Fe(OH) →Fe2O3 + H2O (Pứ Phân huỷ)
h) CaO + H2O →Ca(OH)2. (PỨ hoá hợp)
MN
7 tháng 5 2021
\(2KMnO_4\underrightarrow{^{t^0}}K_2MnO_4+MnO_2+O_2\left(PH\right)\)
\(3Fe+2O_2\underrightarrow{^{t^0}}Fe_3O_4\left(HH\right)\)
\(4P+5O_2\underrightarrow{^{t^0}}2P_2O_5\left(HH\right)\)
\(2HgO\underrightarrow{^{t^0}}2Hg+O_2\left(PH\right)\)
\(2KClO_3\underrightarrow{^{t^0}}2KCl+3O_2\left(PH\right)\)
\(2Mg+O_2\underrightarrow{^{t^0}}2MgO\left(HH\right)\)
\(2Fe\left(OH\right)_3\underrightarrow{^{t^0}}Fe_2O_3+3H_2O\left(PH\right)\)
\(N_2+\dfrac{5}{2}O_2\underrightarrow{^{t^0}}N_2O_5\left(HH\right)\)
9 tháng 3 2022
\(Mg+2HCl\rightarrow MgCl_2+H_2\)
\(FeO+H_2\rightarrow Fe+H_2O\)
\(\Rightarrow\)Phản ứng thế
Lời giải dưới thể hiện đầy đủ cả phần tăng giảm số oxi-hóa và cách cân bằng pthh: