Question

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Answer 1

a, (1) \(CuO+H_2SO_4\rightarrow CuSO_4+H_2O\)

(2) \(CuSO_4+BaCl_2\rightarrow BaSO_{4\downarrow}+CuCl_2\)

(3) \(CuCl_2+2NaOH\rightarrow Cu\left(OH\right)_{2\downarrow}+2NaCl\)

(4) \(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)

(5) \(CuO+2HCl\rightarrow CuCl_2+H_2O\)

b, (1) \(FeO+H_2SO_4\rightarrow FeSO_4+H_2O\)

(2) \(FeSO_4+BaCl_2\rightarrow FeCl_2+BaSO_{4\downarrow}\)

(3) \(FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_{2\downarrow}+2NaCl\)

(4) \(Fe\left(OH\right)_2\xrightarrow[khongcokk]{t^o}FeO+H_2O\)

(5) \(FeO+2HCl\rightarrow FeCl_2+H_2O\)

c, (1) \(Na_2O+H_2O\rightarrow2NaOH\)

(2) \(NaOH+HCl\rightarrow NaCl+H_2O\)

(3) \(2NaCl+2H_2O\xrightarrow[cmn]{đpdd}2NaOH+Cl_2+H_2\)

(4) \(2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O\)

(5) \(Na_2SO_4+BaCl_2\rightarrow BaSO_{4\downarrow}+2NaCl\)

d, (1) \(Mg+\dfrac{1}{2}O_2\underrightarrow{t^o}MgO\)

(2) \(MgO+2HCl\rightarrow MgCl_2+H_2O\)

(3) \(MgCl_2+2AgNO_3\rightarrow Mg\left(NO_3\right)_2+2AgCl_{\downarrow}\)

(4) \(Mg\left(NO_3\right)_2+2NaOH\rightarrow2NaNO_3+Mg\left(OH\right)_{2\downarrow}\)

(5) \(Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O\)