hoàn thành pthh
A \(\underrightarrow{+HCL}\) B \(\underrightarrow{+NaOH}\) C \(\:\underrightarrow{t}\) D \(\underrightarrow{+CO,t}\) Cu
help me......
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\(2Mg+O_2\rightarrow\left(t^o\right)2MgO\)
\(3Fe+2O_2\rightarrow\left(t^o\right)Fe_3O_4\)
\(2Zn+O_2\rightarrow\left(t^o\right)2ZnO\)
\(S+O_2\rightarrow\left(t^o\right)SO_2\)
\(4P+5O_2\rightarrow\left(t^o\right)2P_2O_5\)
\(P_2O_5+3H_2O\rightarrow2H_3PO_4\)
\(N_2O_5+H_2O\rightarrow2HNO_3\)
\(Mg+2HCl\rightarrow MgCl_2+H_2\)
\(Zn+2HCl\rightarrow ZnCl_2+H_2\)
\(Na_2O+H_2O\rightarrow2NaOH\)
\(BaO+H_2O\rightarrow Ba\left(OH\right)_2\)
\(2Na+2H_2O\rightarrow2NaOH+H_2\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
\(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
\(Fe_3O_4+4H_2\rightarrow\left(t^o\right)3Fe+4H_2O\)
\(a)\ CH_3-CH=CH-CH_3 + H_2 \xrightarrow{t^o,Ni} CH_3-CH_2-CH_2-CH_3\\ b)\ CH_2=CH-CH_3 + Br_2 \to CH_2Br-CHBr-CH_3\\ c)\ CH_2=C(CH_3)-CH_3 + HBr \to CH_3-CBr(CH_3)-CH_3\\ d)\ CH_2=CH-CH_2-CH_3 + H_2O \xrightarrow{H^+,t^o} CH_3-CH(OH)-CH_2-CH_3\\ e)\ CH_3-CH=CH-CH_3 + HBr \to CH_3-CH_2-CHBr-CH_3\\ f)\ C_2H_4 + 3O_2 \xrightarrow{t^o} 2CO_2 + 2H_2O\\ g)\ nCH_2=CH_2 \xrightarrow{t^o,p,xt} (-CH_2-CH_2-)_n\\ h)\ nCH_2=CH-CH_3 \xrightarrow{t^o,p,xt} (-CH_2-CH(CH_3)-)_n\)
A: Al..................................................D:Al2O3
B: Ca(AlO2)2.....................................E:AlCl3
C: Al(OH)3
Ta có các phương trình phản ứng sau:
Al + Ca(OH)2 + H2O ➞ Ca(AlO2)2 + H2
Ca(AlO2)2 + 2 HCl + 2 H2O ➞ 2 Al(OH)3 + CaCl2
2 Al(OH)3 ➞tO Al2O3 + 3 H2O
2 Al2O3 ➞(đpnc) 4 Al + 3 O2
2 Al + 3 FeO ➞ Al2O3 + 3 Fe
Al2O3 + 6 HCl ➞ 2 AlCl3 + 3 H2O
2 AlCl3 + 3 Mg ➞ 2 Al + 3 MgCl2
CaO+H2O---->Ca(OH)2
Pt2 ko ổn lw
Na2CO3+2HCl----->2NaCl+H2O+CO2
2NaCl+H2SO4---->Na2SO4+2HCl
Na2SO4+BaCl2---->2NaCl+BaSO4
2NaCl+2H2O---->Cl2+H2+2NaOH
NaOH+HCl----->NaCl+H2O
2NaCl+H2SO4---->Na2SO4+2HCl
A: CuCO3
B: CuCl2
C: Cu(OH)2
D: CuO
PTHH:
CuCO3 + HCl ===> CuCl2 + CO2 + H2O
CuCl2 + 2NaOH ===> Cu(OH)2 + 2NaCl
Cu(OH)2 =(nhiệt)=> CuO + H2O
CuO + CO =(nhiệt)=> Cu + CO2
tks