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a) \(BaCl_2+LiOH\rightarrow\text{không phản ứng}\)
b) \(CH_3COONa+NaOH\xrightarrow[CaO]{t^\circ}Na_2CO_3+CH_4\uparrow\)
Ion RG: \(CH_3COO^-+OH^-\xrightarrow[CaO]{t^\circ}CO_3^{2-}+CH_4\uparrow\)
c) \(CaCO_3+2HNO_3\rightarrow Ca\left(NO_3\right)_2+H_2O+CO_2\uparrow\)
Ion RG: \(CaCO_3+2H^+\rightarrow Ca^{2+}+H_2O+CO_2\uparrow\)
d) \(3Cu+8HCl+8NaNO_3\rightarrow3Cu\left(NO_3\right)_2+8HCl+2NO\uparrow+4H_2O\)
Ion RG: \(3Cu+8H^++2NO_3^-\rightarrow3Cu^{2+}+2NO\uparrow+4H_2O\)
e) \(NH_4Cl+NaNO_2\xrightarrow[]{t^\circ}NaCl+N_2\uparrow+2H_2O\)
Ion RG: \(NH_4^++NO_2^-\rightarrow N_2\uparrow+2H_2O\)
f) \(2NaCl+2H_2O\xrightarrow[cmn]{đpdd}2NaOH+Cl_2\uparrow+H_2\uparrow\)
Ion RG: \(2Cl^-+2H_2O\xrightarrow[cmn]{đpdd}2OH^-+Cl_2\uparrow+H_2\uparrow\)
a) \(N_2+O_2\rightarrow2NO\)
\(\begin{matrix}N^0\rightarrow N^{+2}+2e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times1\end{matrix}\)
b) \(C_2H_5OH+3O_2\rightarrow2CO_2+3H_2O\)
\(\begin{matrix}C^{-2}\rightarrow C^{+4}+6e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times3\end{matrix}\)
c) \(CH_4+2O_2\rightarrow CO_2+2H_2O\)
\(\begin{matrix}C^{-4}\rightarrow C^{+4}+8e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times4\end{matrix}\)
d) \(2H_2S+3O_2\rightarrow2H_2O+2SO_2\)
\(\begin{matrix}S^{-2}\rightarrow S^{+4}+6e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times3\end{matrix}\)
e) \(4NH_3+3O_2\rightarrow2N_2+6H_2O\)
\(\begin{matrix}N^{-3}\rightarrow N^0+3e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times2\\\times3\end{matrix}\)
a)N2+O2->2NO
b)C2H5OH+3O2->2CO2+3H2O
c)CH4+2O2->CO2+2H2O
d)H2S+3/2O2->H2O+SO2 / 2H2S+3O2->2H2O+2SO2
e)2NH3+3/2O2->N2+3H2O / 4NH3+3O2->2N2+6H2O
CHÚC BN HỌC TỐT :))))
a. 6NH3 + 5O3 --> 6NO + 9H2O
b. 2S + HNO3 -to-> 2NO + H2SO4
c. 4NO2 + O2 + 2H2O --> 4HNO3
d. FeCl3 + 3AgNO3 --> Fe(NO3)3 + 3AgCl
e. 3NO2 + H2O -to-> 2HNO3 + NO
f. 3Ba(NO3)2 + Al2(SO4)3 --> 3BaSO4 + 2Al(NO3)3
a. 6NH3 + 5O3 \(\rightarrow\) 6NO + 9H2O
b. 2S + HNO3 \(\underrightarrow{to}\) 2NO + H2SO4
c. 4NO2 + O2 + 2H2O \(\rightarrow\) 4HNO3
d. FeCl3 + 3AgNO3 \(\rightarrow\) Fe(NO3)3 + 3AgCl
e. 3NO2 + H2O \(\underrightarrow{to}\) 2HNO3 + NO
f. 3Ba(NO3)2 + Al2(SO4)3 \(\rightarrow\) 3BaSO4 + 2Al(NO3)3
\(1) 2Fe(OH)_3 \xrightarrow{t^o} Fe_2O_3 + 3H_2O\\ 2) Na_2O + H_2SO_4 \to Na_2SO_4 + H_2O\\ 3) ZnO + H_2SO_4 \to ZnSO_4 + H_2O\\ 4) NaOH + HCl \to NaCl + H_2O\\ 5) 2NaOH + CO_2 \to Na_2CO_3 + H_2O\\ 6) Mg + 2HCl \to MgCl_2 + H)2\\ 7) Cu + 2AgNO_3 \to Cu(NO_3)_2 + 2Ag\\ 8) 2K + S \xrightarrow{t^o} K_2S\)
1, $2Fe(OH)_3\xrightarrow{t^o} Fe_2O_3+3H_2O$
2, $H_2SO_4+2NaOH\to Na_2SO_4+2H_2O$
3, $H_2SO_4+Zn(OH)_2\to ZnSO_4+2H_2O$
4, $NaOH+HCl\to NaCl+H_2O$
5, $2NaOH+CO_2\to Na_2CO_3+H_2O$
6, $Mg+2HCl\to MgCl_2+H_2$
7, $Cu+2AgNO_3\to Cu(NO_3)_2+2Ag$
8, $2K+S\xrightarrow{t^o} K_2S$
1)
(5x-2y)FeO+(16x-6y)HNO3\(\rightarrow\)(5x-2y)Fe(NO3)3+NxOy+(8x-3y)H2O
2)
(5x-2y)M+(6nx-2ny)HNO3\(\rightarrow\)(5x-2y)M(NO3)n+nNxOy+(3nx-ny)H2O
3)
3xFe2O3+(6x-4y)Al\(\rightarrow\)6FexOy+(3x-2y)Al2O3
4)
3FemOn+(12m-2n)HNO3\(\rightarrow\)3mFe(NO3)3+(3m-2n)NO+(6m-n)H2O
5)
(10-2x)FeS2+(60-6x)HNO3\(\rightarrow\)(10-2x)Fe(NO3)3+15N2Ox+(10+x)H2O+(20-4x)H2SO4
Cậu có thể làm rõ cho tôi ví dụ một cái được không? Tuy cậu giúp tôi cân bằng nhưng tôi vẫn không hiểu tại sao lại ra như vậy!.
1,
| 4NH3 | + | 5O2 | → | 6H2O | + |
4NO |
2,
| 3CO | + | Fe2O3 | → | 2Fe | + | 3CO2 |
3,Cu+2H2SO4→2H2O+SO2+CuSO4
4,Fe+4HNO3→2H2O+NO+Fe(NO3)3
5,
| Al | + | 6HNO3 | → | 3H2O | + | 3NO2 | + | Al(NO3)3 |
6,4 Zn0 + 5 H2SO4 → 4 ZnSO4 + H2S + 4 H2O
7,4Mg + 10HNO3->4Mg(NO3)2 + NH4NO3 + 3H2O
8,2 KMnO4 + K2SO3 + 2 KOH → 2 K2MO2O4 + K2SO4 + H2O
9,2 KMnO4 + 10 FeSO4 + 8 H2SO4 → 2 Mn(SO4) + 5 Fe2(SO4)3 +K2SO4 + 8 H2O
Mới lớp 8 mà cân bằng electron rồi à bạn :3
a) 1:2:1:2:2
b) 1:2:1:1:2
c) 2:16:2:2:5:8
d) 10:2:8:5:1:2:8
e) 8:30:8:3:9
\(2NaOH+Cl_2\rightarrow NaCl+NaClO+H_2O\)
\(H_2S+4Br_2+4H_2O\rightarrow8HBr+H_2SO_4\)
\(NaCl+AgNO_3\rightarrow AgCl+NaNO_3\)
\(\left\{{}\begin{matrix}xM^{2y\text{/}x}-\left(xn-2y\right)e\rightarrow xM^n\\N^{+5}+3e\rightarrow N^{+3}\end{matrix}\right.\\ 3M_xO_y+\left(4xn-2y\right)HNO_3\rightarrow3xM\left(NO_3\right)_n+\left(xn-2y\right)NO\uparrow+\left(2xn-y\right)H_2O\)
a, 2Fe+6H2SO4\(\rightarrow\)Fe2(SO4)3+3SO2+6H2O
b, 3Cu+8HNO3\(\rightarrow\) 3Cu(NO3)2+2NO+4H2O
c, Fe+4HNO3\(\rightarrow\) Fe(NO3)3+NO+2H2O
d, Al+6HNO3\(\rightarrow\)Al(NO3)3+3NO2+3H2O
e, Cu+4HNO3\(\rightarrow\) Cu(NO3)2+2NO2+2H2O
Chúc bạn học tốt!
a)
PT ion đầy đủ: \(H^++NO_3^-+Li^++OH^-\rightarrow Li^++NO_3^-+H_2O\)
PT ion rút gọn: \(H^++OH^-\rightarrow H_2O\)
b)
PT ion đầy đủ: \(NH_4^++Cl^-+Cs^++OH^-\rightarrow Cs^++Cl^-+NH_3+H_2O\)
PT ion rút gọn: \(NH_4^++OH^-\rightarrow NH_3+H_2O\)
c)
PT ion đầy đủ: \(3Cu+8H^++8NO_3^-\rightarrow3Cu^{2+}+6NO_3^-+2NO+4H_2O\)
PT ion rút gọn: \(3Cu+8H^++2NO_3^-\rightarrow3Cu^{2+}+2NO+4H_2O\)
d)
PT ion đầy đủ: \(3H^++3Cl^-+3Na^++BO_3^{3-}\rightarrow3Na^++3Cl^-+H_3BO_3\)
PT ion rút gọn: \(3H^++BO_3^{3-}\rightarrow H_3BO_3\)
a) \(HNO_3+LiOH\rightarrow LiNO_3+H_2O\)
- Pt ion đầy đủ: \(H^++NO_3^-+Li^++OH^-\rightarrow Li^++NO_3^-+H_2O\)
- Pt ion rút gọn: \(H^++OH^-\rightarrow H_2O\)
b) \(NH_4Cl+CsOH\rightarrow CsCl+NH_3\uparrow+H_2O\)
- Pt ion đầy đủ: \(NH_4^++Cl^-+Cs^++OH^-\rightarrow Cs^++Cl^-+NH_3\uparrow+H_2O\)
- Pt ion rút gọn: \(NH_4^++OH^-\rightarrow NH_3\uparrow+H_2O\)
c) \(3Cu+8HNO_3\rightarrow3Cu\left(NO_3\right)_2+2NO\uparrow+4H_2O\)
- Pt ion đầy đủ: \(3Cu+8H^++8NO_3^-\rightarrow3Cu^{2+}+6NO_3^-+2NO\uparrow+4H_2O\)
- Pt ion rút gọn: \(3Cu+8H^++2NO_3^-\rightarrow3Cu^{2+}+2NO\uparrow+4H_2O\)
d) \(3HCl+Na_3BO_3\rightarrow3NaCl+H_3BO_3\)
- Pt ion đầy đủ: \(3H^++3Cl^-+3Na^++BO_3^{3-}\rightarrow3Na^++3Cl^-+H_3BO_3\)
- Pt ion rút gọn: \(3H^++BO_3^{3-}\rightarrow H_3BO_3\)