Viết phương trình phản ứng trong sơ đồ biến hóa sau:
\(\eqalign{
& MgC{l_2}\buildrel 1 \over
\longrightarrow Mg\buildrel 2 \over
\longrightarrow MgO\buildrel 3 \over
\longrightarrow Mg{\left( {N{O_3}} \right)_2}\buildrel 4 \over
\longrightarrow MgO \cr
& \buildrel 5 \over
\longrightarrow MgC{l_2}\buildrel 6 \over
\longrightarrow Mg{\left( {OH} \right)_2}\buildrel 7 \over
\longrightarrow MgO\buildrel 8 \over
\longrightarrow MgS{O_4}\buildrel 9 \over
\longrightarrow \cr
& MgC{O_3}\buildrel {10} \over
\longrightarrow Mg{\left( {HC{O_3}} \right)_2} \cr} \)
\((1)MgC{l_2}\buildrel {dpnc} \over
\longrightarrow Mg + C{l_2}\)
(2) 2Mg + O2 → 2MgO
(3) MgO + 2HNO3 → Mg(NO3)2 + H2O
\((4)2Mg{(N{O_3})_2}\buildrel {{t^0}} \over
\longrightarrow 2MgO + 4N{O_2} + {O_2}\)
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(5) MgO + 2HCl → MgCl2 + H2O
(6) MgCl2 + 2NaOH → Mg(OH)2 + 2NaCl
\((7)Mg{(OH)_2}\buildrel {{t^0}} \over
\longrightarrow MgO + {H_2}O\)
(8) MgO + H2SO4 → MgSO4 + H2O
(9) MgSO4 + Na2CO3 → MgCO3 + Na2SO4
(10) MgCO3 + CO2 + H2O → Mg(HCO3)2