Question

Hoàn thành chuỗi pư hoá học

Mg → MgO → MgCl₂ → Mg(NO₃)₂ → Mg(OH)₂ → MgO → MgSO₄ → MgCO₃ → Mg(HCO₃)₂

Answer 1

Đánh số theo thứ tự từ trái qua phải:

\(\left(1\right)Mg+\dfrac{1}{2}O_2\underrightarrow{t^o}MgO\\ \left(2\right)MgO+2HCl\rightarrow MgCl_2+H_2O\\ \left(3\right)MgCl_2+2AgNO_3\rightarrow Mg\left(NO_3\right)_2+2AgCl\\ \left(4\right)Mg\left(NO_3\right)_2+2NaOH\rightarrow Mg\left(OH\right)_2+2NaNO_3\\ \left(5\right)Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O\\ \left(6\right)MgO+H_2SO_4\rightarrow MgSO_4+H_2O\\ \left(7\right)MgSO_4+Na_2CO_3\rightarrow MgCO_3+Na_2SO_4\\ \left(8\right)MgCO_3+CO_2+H_2O\rightarrow Mg\left(HCO_3\right)_2\)

Answer 2

\(2Mg+O_2\xrightarrow[]{t^0}2MgO\\ MgO+2HCl\rightarrow MgCl_2+H_2O\\ MgCl_2+2AgNO_3\rightarrow Mg\left(NO_3\right)_2+2AgCl\downarrow\\ Mg\left(NO_3\right)_2+2NaOH\rightarrow Mg\left(OH\right)_2\downarrow+2NaNO_3\\ Mg\left(OH\right)_2\xrightarrow[]{t^0}MgO+H_2O\\ Mg+H_2SO_4\rightarrow MgSO_4+H_2\uparrow\\ MgSO_4+K_2CO_3\rightarrow MgCO_3\downarrow+K_2SO_4\\ MgCO_3+H_2O+CO_2\rightarrow Mg\left(HCO_3\right)_2\)