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a)
\(16HCl+2KMnO_4\underrightarrow{^{to}}5Cl_2+8H_2O+2MnCl_2\)
\(3Cl_2+6KOH\underrightarrow{^{to}}3H_2O+5KCl+KClO_3\)
\(6HCl+KClO_3\rightarrow3Cl_2+3H_2O+KCl\)
\(3Cl_2+2Fe\rightarrow2FeCl_3\)
\(FeCl_3+3KOH\rightarrow Fe\left(OH\right)_3+3KCl\)
\(KCl+NaOH\rightarrow NaCl+KOH\)
2)
\(2H_2O+CaCl_2\underrightarrow{^{đpmn}}Ca\left(OH\right)_2+Cl_2+2H_2\)
\(Cl_2+H_2\underrightarrow{^{askt}}2HCl\)
\(2HCl+Fe\rightarrow FeCl_2+H_2\)
\(2FeCl_2+Cl_2\rightarrow2FeCl_3\)
\(3Ba\left(OH\right)_2+2FeCl_3\rightarrow3BaCl_2+2Fe\left(OH\right)_3\)
3)
\(4HCl+MnO_2\underrightarrow{^{to}}Cl_2+2H_2O+MnCl_2\)
\(Cl_2+2NaOH\rightarrow H_2O+NaCl+NaClO\)
\(H_2O+NaCl+CO_2\rightarrow NaHCO_3+HClO\)
4)
\(KClO_3+3MnO_2+6NaOH\rightarrow3H_2O+KCl+3Na_2MnO_4\)
\(KCl+AgNO_3\rightarrow AgCl+KNO_3\)
\(2AgCl\underrightarrow{^{nđp,as}}2Ag+Cl_2\)
\(3Cl_2+6KOH\underrightarrow{^{to}}H_2O+5KCl+KClO_3\)
5)
\(CaOCl_2+MnSO_4+2NaOH\rightarrow H_2O+MnO_2+Na_2SO_4+CaCl_2\)
\(2CaOCl_2+H_2O+CO_2\rightarrow CaCO_3+CaCl_2+2HClO\)
\(CaCO_3\underrightarrow{^{to}}CaO+CO_2\)
\(H_2O+NaClO+CO_2\rightarrow NaHCO_3+HClO\)
6)
\(MnO_2+4HBr\rightarrow Br_2+2H_2O+MnBr_2\)
\(Br_2+2HI\rightarrow I_2+2HBr\)
\(2Ag+I_2\rightarrow2AgI\)
4HCl+MnO2-->MnCl2+2H2O+Cl2
3Cl2+2Fe-->2FeCl3
FeCl3+3NaOH-->3NaCl+Fe(OH)3
2NaCl+H2SO4-->Na2SO4+2HCl
2HCl+Cuo-->CuCl2+H2O
CuCl2+2AgNO3-->2AgCl+Cu(NO3)2
3)
3Cl2+6KOH→3H2O+5KCl+KClO3
2KClO3→2KCl+3O2
2KCl+H2SO4→K2SO4+2HCl
16HCl+2KMnO4→5Cl2+8H2O+2KCl+2MnCl2
2Ca(OH)2+2Cl2→2H2O+CaCl2+Ca(ClO)2 e)a. 2KMnO4 + 16HCl (đ) -> 2KCl + 2MnCl2 + 5Cl2 + 8H2O (Đ.C Cl2)
Cl2 + KOH -> KCl + KClO3 + H2O
2KClO3 -> 2KCl + 3O2 (đ/c khí O2 lớp 8)
2KCl -> 2K + Cl2
Cl2 + H2O ->HCl + HClO
2HCl + Fe -> FeCl2 + H2
2FeCl2 + Cl2 -> 2FeCl3
FeCl3 + NaOH -> Fe(OH)3 + NaCl
a)
\(KClO_3 + 6HCl \to 5KCl + Cl_2 + 3H_2O\\ Cl_2 + H_2O \rightleftharpoons HCl + HClO\\ HClO \xrightarrow{ánh\ sáng} HCl + \dfrac{1}{2}O_2\\ 2HCl + Mg \to MgCl_2 + H_2\\ MgCl_2 + 2AgNO_3 \to Mg(NO_3)_2 + 2AgCl\\ 2AgCl \xrightarrow{ánh\ sáng} 2Ag + Cl_2\\ Cl_2 + 2KBr \xrightarrow{t^o} 2KCl + Br_2\\ Br_2 + 2K \xrightarrow{t^o} 2KBr\\ KBr + Cl_2 \to 2KCl + Br_2\\ KCl + H_2SO_4 \xrightarrow{t^o} 2KHSO_4 + HCl\)
b)
\(NaOH + HCl \to NaCl + H_2O\\ NaCl + H_2SO_4 \xrightarrow{t^o} NaHSO_4 + HCl\\ 4HCl + MnO_2 \to MnCl_2 + Cl_2 + 2H_2O\\ Cl_2 + H_2 \xrightarrow{ánh\ sáng} 2HCl\\ 2HCl + CuO \to CuCl_2 + H_2O\\ CuCl_2 + 2KOH \to Cu(OH)_2 + 2KCl\\ Cu(OH)_2 \xrightarrow{t^o} CuO + H_2O\\ CuO + 2HCl \to CuCl_2 + H_2O\\ CuCl_2 + 2KOH \to Cu(OH)_2 + 2KCl\\ 2KCl \xrightarrow{đpnc} 2K + Cl_2\)
1.
\(MnO_2+4HCl\rightarrow MnCl_2+Cl_2+2H_2O\)
\(H_2+Cl_2\underrightarrow{^{as}}2HCl\)
\(NaOH+HCl\rightarrow NaCl+H_2O\)
\(2NaCl\underrightarrow{^{đpnc}}2Na+Cl_2\)
\(4Cl_2+H_2S+4H_2O\rightarrow8HCl+H_2SO_4\)
\(NaCl+H_2SO_4\rightarrow NaHSO_4+HCl\)
2.
\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(6KOH+3Cl_2\rightarrow5KCl+KClO_3+3H_2O\)
\(KClO_3+6HCl\rightarrow KCl+3Cl_2+3H_2O\)
\(Fe+\frac{3}{2}Cl_2\underrightarrow{^{to}}FeCl_3\)
\(FeCl_3+3KOH\rightarrow Fe\left(OH\right)_3+3KCl\)
\(2KCl+2H_2O\underrightarrow{^{đpmn}}2KOH+Cl_2+H_2\)
3.
\(BaCl_2\underrightarrow{^{đpnc}}Ba+Cl_2\)
\(Cl_2+H_2\underrightarrow{^{as}}2HCl\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
\(2FeCl_2+3Cl_2\rightarrow2FeCl_3\)
\(3Ba\left(OH\right)_2+2FeCl_3\rightarrow3BaCl_2+2Fe\left(OH\right)_3\)
\(BaCl_2+H_2SO_4\rightarrow BaSO_4+2HCl\)
4.
\(C_2H_2+Cl_2\rightarrow2C+2HCl\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+2KOH\rightarrow Cu\left(OH\right)_2+2KCl\)
\(2KCl+2H_2O\underrightarrow{^{đpmn}}2KOH+H_2+Cl_2\)
\(3Cl_2+6KOH\rightarrow5KCl+KClO_3+3H_2O\)
\(KClO_3+6HCl\rightarrow KCl+3Cl_2+3H_2O\)
5.
\(MnO_2+4HCl\rightarrow MnCl_2+Cl_2+2H_2O\)
\(2Fe+3Cl_2\rightarrow2FeCl_3\)
\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\)
\(NaCl+H_2SO_4\rightarrow NaHSO_4+HCl\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+AgNO_3\rightarrow Cu\left(NO_3\right)_2+2AgCl\)
6.
\(NaCl+H_2SO_4\rightarrow NaHSO_4+HCl\)
\(MnO_2+4HCl\rightarrow MnCl_2+Cl_2+H_2O\)
\(6KOH+3Cl_2\rightarrow5KCl+KClO_3+3H_2O\)
\(KClO_3+6HCl\rightarrow KCl+3Cl_2+3H_2O\)
\(2KCl\underrightarrow{^{đpnc}}2K+Cl_2\)
\(Cl_2+Ca\left(OH\right)_2\rightarrow CaOCl_2+H_2O\)
1. MnO2 +4HCl→ Cl2+MnCl2+4H2O
Cl2+2H2→ 2HCl
HCl+Na2O→ NaCl+H2O
2NaCl → Cl2+2Na
2Cl2+2H2O+CO2→ H2SO4 +4HCl
H2SO4+BaCl2→ 2HCl+BaSO4
2. 2KMnO4 +16HCl→ 5Cl2+8H2O+2KCl+2MnCl2
2Cl2+6KOH→ KClO3 +5KCl+3H2O
KClO3+6HCl→ 3Cl2+KCl+3H2O
3Cl2+2Fe→2 FeCl3
FeCl3+3KOH→ 3KCl +Fe(OH)3
2KCl+2H2O→ KOH+Cl2+2H2O
3. BaCl2 → Cl2+Ba
Cl2+2H2→ 2HCl
2HCl+Fe→ FeCl2+H2
2FeCl2+Cl2→ 2FeCl3
2FeCl3+3Ba(OH)2→ 3BaCl2+2Fe(OH)3
BaCl2+H2SO4→ 2HCl+BaSO4
Mỏi tay rồi :((
2) 2KMnO4 + 16HCl = 2KCl + 2MnCl2 + 5Cl2 + 8H2O
Cl2 + H2 = 2HCl ( điều kiện ánh sáng )
2HCl + Fe = FeCl2 + H2
FeCl2 + 2AgNO3 = 2AgCl + Fe(NO3)2
2AgCl = 2Ag + Cl2
a. NaCl → Cl2 → FeCl3 → NaCl → HCl → CuCl2 → AgCl.
2NaCl+2H2O-đp\mn->2NaOH+H2+Cl2
3Cl2+2Fe-to>2FeCl3
FeCl3+3NaOH->3NaCl+Fe(OH)3
2NaCl+H2SO4-to>Na2SO4+2HCl
2HCl+CuO->CuCl2+H2O
CuCl2+2AgNO3->2AgCl+Cu(NO3)2
Chọn đáp án A
Các phản ứng thuộc loại phản ứng oxi hóa – khử là:
C l 2 + 2 NaOH → NaCl + NaClO + H 2 O
C l 2 + C a O H 2 → C a O C l 2 + H 2 O
1.
\(CaF_2+H_2SO_{4_{dac}}\underrightarrow{^{to}}CaSO_4+HF\)
\(2HF\underrightarrow{^{to}}F_2+H_2\)
\(F_2+Cu\underrightarrow{^{to}}CuF_2\)
\(CuF_2+2HCl\rightarrow CuCl_2+2HF\)
\(4HF+SiO_2\rightarrow SiF_4+2H_2O\)
2.
\(Ca\left(OH\right)_2+Cl_2\rightarrow CaOCl_2+H_2O\)
\(2CaOCl_2+H_2O+CO_2\rightarrow CaCO_3+CaCl_2+2HClO\)
\(CaCO_3+2HCl\rightarrow CaCl_2+CO_2+H_2O\)
\(NaClO+CO_2+H_2O\rightarrow NaHCO_3+HClO\)
\(NaOH+HClO\rightarrow H_2O+NaClO\)
3.
\(2NaBr+Cl_2\rightarrow2NaCl+Br_2\)
\(Br+H_2O⇌HBr+HBrO\)
\(HBrO+NaOH\rightarrow NaBrO+H_2O\)
4.
\(2HCl+CuO\rightarrow CuCl_2+H_2O\)
\(CuCl_2+2KOH\rightarrow Cu\left(OH\right)_2+2KCl\)
\(2KCl+2H_2O\underrightarrow{^{to}}2KOH+Cl_2+H_2\)
\(6KOH_{dac}+3Cl_2\underrightarrow{^{to}}KClO_3+5KCl+3H_2O\)
\(2KClO_3\underrightarrow{^{to}}2KCl+3O_2\)