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Lập phương trình hóa học của các phản ứng sau và cho biết chúng thuộc loại phản ứng hóa học nào .
a, 2KNO3 -to--> 2KNO2 + O2 ( Phản ứng phân hủy )
b, 2Al + 3Cl2 ---> 2AlCl3 ( Phản ứng hóa hợp )
c, Zn + 2HCl ---> ZnCl2 + H2 ( Phản ứng thế )
d, 2KClO3 -to--> 2KCl + 3O2 ( Phản ứng phân hủy )
e, 2Fe + 3Cl2 ---> 2FeCl3 ( Phản ứng hóa hợp )
f, 2Fe(OH)3 --to-> Fe2O3 + 3H2O ( Phản ứng phân hủy )
g, C + 2MgO ---> 2Mg + CO2 ( Phản ứng thế )
a) K2O + H2O → 2KOH (phản ứng hóa hợp).
b) 2Al(OH)3 \(\underrightarrow{t^o}\) Al2O3 + 3H2O (phản ứng phân hủy)
c) Fe2O3 + 3H2 \(\underrightarrow{t^o}\) 2Fe + 3H2O ( phản ứng oxi hóa khử)
d) Zn + CuSO4 → ZnSO4 + Cu (phản ứng thế)
Em xem lại các bài học sau để nắm rõ định nghĩa về các loại phản ứng nhé
https://hoc24.vn/ly-thuyet/bai-25-su-oxi-hoa-phan-ung-hoa-hop-ung-dung-cua-oxi.434
https://hoc24.vn/ly-thuyet/bai-27-dieu-che-khi-oxi-phan-ung-phan-huy.436
https://hoc24.vn/ly-thuyet/bai-32-phan-ung-oxi-hoa-khu.441
https://hoc24.vn/ly-thuyet/bai-33-dieu-che-hidro-phan-ung-the.442
a) \(4Na+O_2\underrightarrow{t^o}2Na_2O\)
b) \(3KOH+AlCl_3\rightarrow3KCl+Al\left(OH\right)_3\downarrow\)
c) \(Zn+2HCl\rightarrow ZnCl_2+H_2\)
d) \(2KClO_3\underrightarrow{t^o}2KCl+3O_2\)
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)
\(a,3Fe+2O_2\xrightarrow[]{t^o}Fe_3O_4\) (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)
a: \(3Fe+2O_2\rightarrow Fe_3O_4\)
b: \(2KClO_3\rightarrow2KCl+3O_2\)
c: \(Zn+CuCl_2\rightarrow ZnCl_2+Cu\)
a) \(4Na+O_2\underrightarrow{t^o}2Na_2O\)
b) \(3KOH+AlCl_3\rightarrow3KCl+Al\left(OH\right)_3\downarrow\)
c) \(Zn+2HCl\rightarrow ZnCl_2+H_2\)
d) \(2KClO_3\underrightarrow{t^o}2KCl+3O_2\)
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Al2(SO4)3 + ...
Zn + 2HCl → ZnCl2 + H2
2H2 + O2 → 2H2O
2KClO3 ---to→ 2KCl + 3O2
2Al + 3H2SO4 → Al2(SO4)3 + 3H2
CuO + H2 → Cu + H2O
\(a.2Al+3CuCl_2\rightarrow2AlCl_3+3Cu\)
Tỉ lệ = \(2:3:2:3\)
\(b.2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O\)
Tỉ lệ = \(2:1:1:2\)
\(c.CaO+2HCl\rightarrow CaCl_2+H_2O\)
Tỉ lệ = \(1:2:1:1\)
\(d.Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\)
Tỉ lệ = \(1:1:1:1\)
a.2Al+3CuCl2→2AlCl3+3Cua.2Al+3CuCl2→2AlCl3+3Cu
b.2NaOH+H2SO4→Na2SO4+2H2Ob.2NaOH+H2SO4→Na2SO4+2H2O
c.CaO+2HCl→CaCl2+H2Oc.CaO+2HCl→CaCl2+H2O
d.Ca(OH)2+CO2→CaCO3+H2Od.Ca(OH)2+CO2→CaCO3+H2O
a) CaO + H2O -------> Ca(OH)2 (pu2 hoá hợp)
b) Zn +2 HCl -------> ZnCl2 + H2 ↑ (pư oxi hoá khử0
c)2 Al + 3CuCl2 ---------> 2AlCl3 +3 Cu (pu2 trao đổi)
d) CaCO3 ----------> CO2 + CaO(pu2 phân huỷ)