Phản ứng nào sau đây không xảy ra:

A. CuO + HCl          B. Cu + HCl           C. Fe + HCl           D. FeO + HCl

Cu đứng sau H trong dãy hoạt động hóa học , nên không phản ứng với HCl.

MnO2+4HCl->MnCl2+Cl2+H2O

Fe+2HCl->FeCl2+H2

2Fe+3CL2-to>2Fecl3

b)

2NaCl+2H2O-đp\comn>2NaOH+cl2+H2

H2+Cl2-as->2HCl

Cl2+2NaOH->NaCl+NaClO+H2O

a, Fe + 2HCl ---> FeCl₂ + H₂

MnO₂ + 4HCl ---> MnCl₂ + Cl₂ + 2H₂O

2Fe + 3Cl₂ ---t^o---> 2FeCl₃

b, 2NaCl ---đpnc---> 2Na + Cl₂

2H₂O ---đp---> 2H₂ + O₂

H₂ + Cl₂ ---as---> 2HCl

2Na + 2H₂O ---> 2NaOH + H₂

2NaOH + Cl₂ ---đpkcmn---> NaCl + NaClO + H₂O

Những chất mình in đậm là nữngc chất cần điều chế nha

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)

câu c

Hoàn thành các phương trình phản ứng xảy ra (nếu có, ghi rõ điều kiện)

1) 3Cl₂ + 2Fe →to->...2FeCl3........

2) 2Cl₂ + 2H₂O → .....4HCl + O2.......

3) Cl₂ + 2NaOH → ....NaClO + NaCl + H20.....

4) Fe + .....2HCl..... → FeCl₂ + ......H2.......

5) 3HCl + Fe(OH)₃→......FeCl3 + 3H20.............

6) KCl + AgNO₃→........AgCl + KNO3................

7) 2HCl + CaCO₃ →.........CaCl2 + H2CO3..............

ai hộ e với em cần gấp ạ

a. KClO₃ + 6HCl → 3Cl₂ + KCl + 3H₂O.

2Fe + 3Cl₂ \(\underrightarrow{t^o}\) 2FeCl₃.

FeCl₃ + 3NaOH \(\rightarrow\) Fe(OH)₃ + 3NaCl.

2Fe(OH)₃ + 3H₂SO₄ \(\rightarrow\) Fe₂(SO₄)₃ + 6H₂O.

b. KClO₃ + 6HCl → 3Cl₂ + KCl + 3H₂O.

2Na + Cl₂ \(\underrightarrow{t^o}\) 2NaCl.

2NaCl + H₂SO₄ (đặc) \(\underrightarrow{250^oC}\) Na₂SO₄ + 2HCl.

2HCl + CuO \(\rightarrow\) CuCl₂ + H₂O.

CuCl₂ + 2AgNO₃ \(\rightarrow\) 2AgCl + Cu(NO₃)₂.

2AgCl + Cu \(\rightarrow\) CuCl₂ + 2Ag.

\(H_2 + Cl_2 \xrightarrow{ánh\ sáng} 2HCl\\ Fe + 2HCl \to FeCl_2 + H_2\\ 2FeCl_2 + Cl_2 \to 2FeCl_3\\ FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl\\ Fe(OH)_3 + 3HCl \to FeCl_3 + 3H_2O\\ 4HCl + MnO_2 \to MnCl_2 + Cl_2 + 2H_2O\\ \)

\(2NaOH + Cl_2 \to NaCl + NaClO + H_2O\\ NaCl + H_2SO_4 \xrightarrow{t^o} NaHSO_4 + HCl\\ CuO + 2HCl \to CuCl_2 + H_2O\\ CuCl_2 + 2AgNO_3 \to Cu(NO_3)_2 + 2AgCl\)

1.

Cl2 + H2O <->HCl + HClO2HCl + Fe -> FeCl2 + H22FeCl2 + Cl2 -to> 2FeCl3FeCl3 + NaOH -> Fe(OH)3 + NaCl

2Fe(OH)3+6HCl->2FeCl3+3H2O

b>4HCl+MnO2->MnCl2+2H2O+Cl2

Cl2+2Na-to>2NaCl

2NaCl+2H2SO4đ-to>Na2SO4+2HCl

HCl+CuO->CuCl2+H2O

CuCl2+2AgNO3->2AgCl+Cu(NO3)2

a)

\(MnO_2 + 4HCl \to MnCl_2 + Cl_2 + 2H_2O\\ Cl_2 + H_2 \xrightarrow{ánh\ sáng} 2HCl\\ NaOH + HCl \to NaCl + H_2O\\ 2NaCl \xrightarrow{đpnc} 2Na + Cl_2\\ Cl_2 + SO_2 + 2H_2O \to 2HCl + H_2SO_4\\ NaCl + H_2SO_4 \xrightarrow{t^o} NaHSO_4 + HCl\)

b)

\(PbO_2 + 4HCl \to PbCl_2 + Cl_2 + 2H_2O\\ 2Na + Cl_2 \xrightarrow{t^o} 2NaCl\\ 2NaCl \xrightarrow{đpnc} 2Na + Cl_2\\ 2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3\\ FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl\\ 2Fe(OH)_3 \xrightarrow{t^o} Fe_2O_3 + 3H_2O\\ Fe_2O_3 + 6HNO_3 \to 2Fe(NO_3)_3 + 3H_2O\)

bài 1

câu a:

Mn02 + 4HCl --> MnCl2 + Cl2 + 2H20

Cl2 + H2 -->t° ánh sáng 2HCl

4HCl + Mn02 --> MnCl2 + Cl2 + 2H20

Cl2 + 2Na -->t° 2NaCl

2NaCl -->điện phân nóng chảy 2Na + Cl2

câu b/

 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 c/

HCl ---> Cl2 ---> FeCl3 ---> NaCl ---> HCl ---> CuCl2 ---> AgCl
2HCl→Cl2+H2
3Cl2+2Fe→2FeCl3
3NaOH+FeCl3→3NaCl+Fe(OH)3
H2SO4+NaCl→HCl+NaHSO4
CuO+2HCl→2H2O+CuCl2
2AgNO3+CuCl2→2AgCl+Cu(NO3)2

Bài 2:

CTHH: MO

\(n_{MO}=\dfrac{15,3}{M_M+16}\left(mol\right)\)

PTHH: MO + 2HCl --> MCl₂ + H₂O

=> \(n_{MCl_2}=\dfrac{15,3}{M_M+16}\left(mol\right)\)

=> \(\dfrac{15,3}{M_M+16}\left(M_M+71\right)=20,8\)

=> M_M = 137 (g/mol)

=> M là Ba (Bari)

\(n_{BaO}=\dfrac{15,3}{153}=0,1\left(mol\right)\)

PTHH: BaO + 2HCl --> BaCl₂ + H₂O

            0,1-->0,2

=> m_HCl = 0,2.36,5 = 7,3 (g)

=> \(m_{ddHCl}=\dfrac{7,3.100}{18,25}=40\left(g\right)\)

\(a.\)

\(NaCl+H_2SO_4\underrightarrow{t^0}NaHSO_4+HCl\)

\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)

\(Fe+\dfrac{3}{2}Cl_2\underrightarrow{t^0}FeCl_3\)

\(2FeCl_3+Fe\rightarrow3FeCl_2\)

\(FeCl_2\underrightarrow{đpdd}Fe+Cl_2\)

\(Fe+2AgNO_3\rightarrow Fe\left(NO_3\right)_2+2Ag\)

\(b.\)

\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)

\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_2+3NaCl\)

\(2Fe\left(OH\right)_2+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)

\(Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_4\)

\(2NaCl\underrightarrow{\text{điện phân nóng chảy}}2Na+Cl_2\uparrow\\ H_2+Cl_2\underrightarrow{\text{ánh sáng}}2HCl\\ Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\\ FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3\downarrow+3NaCl\)