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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
Câu 2:
\(3Cl_2+6KOH\underrightarrow{t^o}5KCl+KClO_3+3H_2O\)
\(2KClO_3\underrightarrow{t^o}2KCl+3O_2\uparrow\)
\(KCl_{\left(r\right)}+H_2SO_{4\left(đ/n\right)}\rightarrow KHSO_4+HCl\uparrow\)
\(MnO_2+4HCl\underrightarrow{t^o}MnCl_2+Cl_2\uparrow+2H_2O\)
\(Ca+Cl_2\rightarrow CaCl_2\)
\(CaCl_2+2AgNO_3\rightarrow Ca\left(NO_3\right)_2+2AgCl\downarrow\)
Câu 3:
\(2KMnO_4+16HCl\rightarrow2MnCl_2+2KCl+5Cl_2\uparrow+8H_2O\)
\(H_2+Cl_2\underrightarrow{as}2HCl\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\uparrow\)
\(FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2\downarrow+2NaCl\)
\(NaCl_{\left(r\right)}+H_2SO_{4\left(đ/n\right)}\rightarrow NaHSO_4+HCl\uparrow\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+2AgNO_3\rightarrow Cu\left(NO_3\right)_2+2AgCl\downarrow\)
\(2AgCl\underrightarrow{as}2Ag+Cl_2\uparrow\)
Câu 2:
\(\left(1\right)3Cl_2+6KOH\overset{t^o}{--->}5KCl+KClO_3+3H_2O\)
\(\left(2\right)2KClO_3\overset{t^o}{--->}2KCl+3O_2\uparrow\)
\(\left(3\right)\cdot\cdot\cdot\cdot\cdot\cdot\cdot\)
\(\left(4\right)4HCl+MnO_2--->MnCl_2+2H_2O+Cl_2\uparrow\)
\(\left(5\right)Cl_2+Ca\overset{t^o}{--->}CaCl_2\)
\(\left(6\right)CaCl_2+2AgNO_3--->Ca\left(NO_3\right)_2+2AgCl\downarrow\)
a)
\(MnO_2+4HCl\underrightarrow{t^o}MnCl_2+Cl_2+2H_2O\)
\(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\)
\(2NaCl\left(r\right)+H_2SO_4đ\rightarrow Na_2SO_4+2HCl\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+2AgNO_3\rightarrow2AgCl+Cu\left(NO_3\right)_2\)
b) \(2KMnO_4+16HClđ\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(Cl_2+H_2\underrightarrow{as}2HCl\)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
\(FeCl_3+3AgNO_3\rightarrow3AgCl+Fe\left(NO_3\right)_3\)
\(2AgCl\underrightarrow{as}2Ag+Cl_2\)
\(Cl_2+2NaBr\rightarrow2NaCl+Br_2\)
\(Br_2+2NaI\rightarrow2NaBr+I_2\)
\(Zn+I_2\underrightarrow{t^o}ZnI_2\)
\(ZnI_2+2NaOH\rightarrow2NaI+Zn\left(OH\right)_2\)
c. \(MnO_2+4HCl\underrightarrow{t^o}MnCl_2+Cl_2+2H_2O\)
\(3Cl_2+6KOH\rightarrow3H_2O+5HCl+KClO_3\)
\(2KClO_3\xrightarrow[MnO_2]{t^o}2KCl+3O_2\)
\(2KCl\left(r\right)+H_2SO_4đ\underrightarrow{t^o}K_2SO_4+2HCl\)
\(MnO_2+4HCl\underrightarrow{t^o}MnCl_2+Cl_2+H_2O\)
\(Cl_2+Ca\left(OH\right)_2\rightarrow CaOCl_2+H_2O\)
e. \(2KMnO_4+16HClđ\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(2KClO_3\xrightarrow[MnO_2]{t^o}2KCl+3O_2\)
\(2KCl+2H_2O\underrightarrow{dpdd}2KOH+H_2+Cl_2\)
\(H_2+Cl_2\underrightarrow{t^o}2HCl\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
\(2FeCl_2+Cl_2\underrightarrow{t^o}2FeCl_3\)
\(FeCl_3+3NaOH\rightarrow3NaCl+Fe\left(OH\right)_3\)
a)
\(MnO_2+4HCl\rightarrow MnCl_2+Cl_2+2H_2O\)
\(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3\downarrow+3NaCl\)
\(2NaCl+H_2SO_4\underrightarrow{t^o}Na_2SO_4+2HCl\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+2AgNO_3\rightarrow Cu\left(NO_3\right)_2+2AgCl\downarrow\)
b)
\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(H_2+Cl_2\underrightarrow{t^o}2HCl\)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
\(FeCl_3+3AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\downarrow\)
\(2AgCl\underrightarrow{as}2Ag+Cl_2\)
\(2NaBr+Cl_2\rightarrow2NaCl+Br_2\)
\(2NaI+Br_2\rightarrow2NaBr+I_2\)
\(Zn+I_2\underrightarrow{H_2O}ZnI_2\)
\(ZnI_2+2NaOH\rightarrow2NaI+Zn\left(OH\right)_2\)
c)
\(MnO_2+4HCl\rightarrow MnCl_2+Cl_2+2H_2O\)
\(3Cl_2+6KOH\underrightarrow{t^o}5KCl+KClO_3+3H_2O\)
\(2KClO_3\underrightarrow{t^o}2KCl+3O_2\)
\(2KCl+H_2SO_4\underrightarrow{t^o}K_2SO_4+2HCl\)
\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(Ca\left(OH\right)_2+Cl_2\rightarrow CaOCl_2+H_2O\)
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
Mình làm câu 2 nhé:
Cho thử quỳ tím:
- Quỳ tím chuyển đỏ -> H2SO4, HCl (1)
- Quỳ tím chuyển xanh -> NaOH
- Quỳ tím không đổi màu -> NaCl, NaI, NaBr (2)
Cho lần lượt các chất (1) tác dụng với BaCl2:
- Xuất hiện kết tủa trắng -> H2SO4
BaCl2 + H2SO4 -> BaSO4 + 2HCl
- Không hiện tượng -> HCl
Cho lần lượt các chất (2) tác dụng với AgNO3:
- Kết tủa màu trắng -> AgCl
NaCl + AgNO3 -> AgCl + NaNO3
- Kết tủa màu vàng nhạt -> NaBr
NaBr + AgNO3 -> NaNO3 + AgBr
Kết tủa màu vàng đậm -> NaI
NaI + AgNO3 -> AgI + NaNO3
Câu 1:
a) \(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(\dfrac{1}{2}Cl_2+K\underrightarrow{t^o}KCl\)
\(2KCl+2H_2O\xrightarrow[cómàngngăn]{đp}2KOH+Cl_2+H_2\)
\(Cl_2+H_2O⇌HCl+HClO\)
\(NaOH+HClO\rightarrow NaClO+H_2O\)
\(NaClO_{\left(rắn\right)}+HCl\rightarrow NaCl+Cl_2+H_2O\)
\(2NaCl+2H_2O\xrightarrow[cómàngngăn]{đp}2NaOH+Cl_2+H_2O\)
\(3Cl_2+2Fe\underrightarrow{t^o}2FeCl_3\)
b) \(MnO_2+4HCl\rightarrow MnCl_2+Cl_2+2H_2O\)
\(Cl_2+H_2\underrightarrow{a/s}2HCl\)
\(2HCl+Fe\rightarrow FeCl_2+H_2\)
\(2FeCl_2+Cl_2\rightarrow2FeCl_3\)
\(FeCl_3+3KOH\rightarrow3KCl+Fe\left(OH\right)_3\downarrow\)
\(2KCl+2H_2O\xrightarrow[cmn]{đp}2KOH+Cl_2+H_2\)
\(6KOH+3Cl_2\underrightarrow{t^o}5KCl+KClO_3+3H_2O\)
\(KClO_3+6HCl\rightarrow KCl+3Cl_2+3H_2O\)
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