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a)
$CaCO_3 \xrightarrow{t^o} CaO + CO_2$
$CaO + H_2O \to Ca(OH)_2$
$Ca(OH)_2 + 2HCl \to CaCl_2 + 2H_2O$
$CaCl_2 + 2AgNO_3 \to Ca(NO_3)_2 + 2AgCl$
b)
$2Mg + O_2 \xrightarrow{t^o} 2MgO$
$MgO + 2HCl \to MgCl_2 + H_2O$
$MgCl_2 + 2KOH \to Mg(OH)_2 + 2KCl$
$Mg(OH)_2 + H_2SO_4 \to MgSO_4 + 2H_2O$
2CH3COOH+Na->CH3COONa+H2
CH3COOH+Na2CO3->CH2COONa+h2O+CO2
2CH3COOH+CaCO3->(CH3COO)2Ca+H2O+CO2
2CH3COOH+Mg->(CH3COO)2Mg+H2
Bài 4: Hoàn thành các PTHH sau:
a, Na + CH3COOH → CH3COONa + \(\dfrac{1}{2}\)H2
b, Na2CO3 + 2CH3COOH → 2CH3COONa + H2O + CO2
c, 2CH3COOH + CaCO3 → (CH3COO)2Ca + H2O + CO2↑
d, 2CH3COOH + Mg → (CH3COO)2Mg + H2↑
a) \(2Na+2CH_3COOH\rightarrow2CH_3COONa+H_2\)
b) \(Na_2CO_3+2CH_3COOH\rightarrow2CH_3COONa+CO_2+H_2O\)
c) \(2CH_3COOH+CaCO_3\rightarrow\left(CH_3COO\right)_2Ca+H_2O+CO_2\)
d) \(2CH_3COOH+Mg\rightarrow\left(CH_3COO\right)_2Mg+H_2\)
\(a) 2Na+2CH_3COOH→2CH_3COONa+H_2 \)
\(b) Na_2CO_3+2CH_3COOH→2CH_3COONa+CO_2+H_2O \)
\(c) 2CH_3COOH+CaCO_3→(CH_3COO)_2Ca+H_2O+CO_2↑ \)
\(d) 2CH_3COOH+Mg→(CH_3COO)_2Mg+H_2↑\)
Đánh số theo thứ tự từ trái qua phải:
\(\left(1\right)Mg+\dfrac{1}{2}O_2\underrightarrow{t^o}MgO\\ \left(2\right)MgO+2HCl\rightarrow MgCl_2+H_2O\\ \left(3\right)MgCl_2+2AgNO_3\rightarrow Mg\left(NO_3\right)_2+2AgCl\\ \left(4\right)Mg\left(NO_3\right)_2+2NaOH\rightarrow Mg\left(OH\right)_2+2NaNO_3\\ \left(5\right)Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O\\ \left(6\right)MgO+H_2SO_4\rightarrow MgSO_4+H_2O\\ \left(7\right)MgSO_4+Na_2CO_3\rightarrow MgCO_3+Na_2SO_4\\ \left(8\right)MgCO_3+CO_2+H_2O\rightarrow Mg\left(HCO_3\right)_2\)
\(2Mg+O_2\xrightarrow[]{t^0}2MgO\\ MgO+2HCl\rightarrow MgCl_2+H_2O\\ MgCl_2+2AgNO_3\rightarrow Mg\left(NO_3\right)_2+2AgCl\downarrow\\ Mg\left(NO_3\right)_2+2NaOH\rightarrow Mg\left(OH\right)_2\downarrow+2NaNO_3\\ Mg\left(OH\right)_2\xrightarrow[]{t^0}MgO+H_2O\\ Mg+H_2SO_4\rightarrow MgSO_4+H_2\uparrow\\ MgSO_4+K_2CO_3\rightarrow MgCO_3\downarrow+K_2SO_4\\ MgCO_3+H_2O+CO_2\rightarrow Mg\left(HCO_3\right)_2\)
K nha !
Mg + H2SO4 -------> MgSO4 + H2
MgSO4 + BaCl2 --------> MgCl2 + BaSO4
MgCl2 + 2KNO3 -------> 2KCl + Mg(NO3)2
Mg(NO3)2 + 2NaOH ------> Mg(OH)2 + 2NaNO3
Mg(OH)2 --------> MgO + H2O
MgO + H2SO4 -------> MgSO4 + H2O
\(MgCl_2\rightarrow Mg+Cl_2\uparrow\)
\(2Mg+O_2\rightarrow2MgO\)
\(MgO+H_2SO_4\rightarrow MgSO_4\downarrow+H_2O\)
\(MgSO_4+Ba\left(NO_3\right)2\rightarrow Mg\left(NO_3\right)_2+BaSO_4\downarrow\)
\(Mg\left(NO_3\right)_2+2NaOH\rightarrow Mg\left(OH\right)_2\downarrow+2NaNO_3\)
\(Mg\left(OH\right)_2\rightarrow MgO+H_2O\)
A:
\(Cu\left(OH\right)_2--to->CuO+H_2O\)
\(CuO+2HCl-->CuCl_2+H_2O\)
\(CuCl_2+2NaOH-->Cu\left(OH\right)_2+2NaCl\)
\(Cu\left(OH\right)_2+H_2SO_4-->CuSO_4+2H_2O\)
B:
\(Mg\left(OH\right)_2--to->MgO+H_2O\)
\(MgO+2HCl-->MgCl_2+H_2O\)
\(MgCl_2+2NaOH-->Mg\left(OH\right)_2+2NaCl\)
\(Mg\left(OH\right)_2+H_2SO_4-->MgSO_4+2H_2O\)
A: Cu(OH)2 \(\underrightarrow{t^o}\) CuO + H2O
CuO + 2HCl \(\rightarrow\) CuCl2 + H2O
CuCl2 +2 NaOH \(\rightarrow\) Cu(OH)2 + NaCl
Cu(OH)2 + H2SO4 \(\rightarrow\) CuSO4 + 2H2O
B: Mg(OH)2 \(\underrightarrow{t^o}\) 2MgO + H2O
MgO + 2HCl \(\rightarrow\) MgCl2 + H2O
MgCl2 + 2NaOH \(\rightarrow\) Mg(OH)2 + NaCl
Mg(OH)2 + H2SO4 \(\rightarrow\) MgSO4 + 2H2O
Giải được câu A rồi thì câu B làm tương tự thôi
\(S+O_2\rightarrow\left(t^o\right)SO_2\)
\(2SO_2+O_2\rightarrow\left(t^o,V_2O_5\right)2SO_3\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
\(H_2SO_4+Mg\rightarrow MgSO_4+H_2\uparrow\)
\(MgSO_4+BaCl_2\rightarrow MgCl_2+BaSO_4\downarrow\)
\(MgCl_2+2NaOH\rightarrow Mg\left(OH\right)_2+2NaCl\)
\(Mg\left(OH\right)_2\rightarrow\left(t^o\right)MgO+H_2O\)
\(S+O_2\xrightarrow[]{t^o}SO_2\)
\(2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
\(H_2SO_4+Mg\left(OH\right)_2\rightarrow MgSO_4+H_2O\)
\(MgSO_4+BaCl_2\rightarrow BaSO_4\downarrow+MgCl_2\)
\(MgCl_2+2NaOH\rightarrow Mg\left(OH\right)_2+2NaCl\)
\(Mg\left(OH\right)_2\xrightarrow[]{t^o}MgO+H_2O\)
2Mg+O2--> 2MgO(1)
MgO+2HCl-->MgCl2+H2O(2)
MgCl2+2NaOH--> Mg(OH)2+2NaCl(3)
Mg(OH)2+CuSO4-->MgSO4+Cu(OH)2(4)
MgSO4+Ba(NO3)2-->Mg(NO3)2+BaSO4(5)
CuO+H2SO4-->CuSO4+H2O(1)
CuSO4+2NaOH-->Cu(OH)2+Na2SO4(2)
Cu(OH)2+2HCl-->CuCl2+2H2O(3)
CuCl2+2AgNO3-->Cu(NO3)2+2AgCl(4)
Cu(NO3)2+Mg-->Mg(NO3)2+Cu(5)
\(\left(1\right)Mg+H_2SO_{4\left(loang\right)}\rightarrow MgSO_4+H_2\)
\(\left(2\right)MgSO_4+2NaOH\rightarrow Mg\left(OH\right)_2\downarrow+Na_2SO_4\)
\(\left(3\right)Mg\left(OH\right)_2+2CH_3COOH\rightarrow\left(CH_3COO\right)_2Mg+2H_2O\)
\(\left(4\right)3\left(CH_3COO\right)_2Mg+3K_3PO_4\rightarrow6CH_3COOK+Mg_3\left(PO_4\right)_2\)