Осуществите цепочки превращений:
MgO→ MgO → MgCl2
Na2O → NaOH → Na2SO4
Ca → CaO → Ca(OH)2 → CaCО3
S→ SO2 → K2SO3
MgO→ MgO → MgCl2
Na2O → NaOH → Na2SO4
Ca → CaO → Ca(OH)2 → CaCО3
S→ SO2 → K2SO3
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Answers & Comments
Ответ:
1)MgO+2HCl=MgCl2 +H2O
2)Na2O+H2O=2NaOH
NaOH + H2SO4=Na2SO4+H2O
3)2Ca+O2=2CaO
CaO+H2O=Ca (OH)2
Ca(OH)2 + CO2=CaCO3+H2O
4) S+O2=SO2
SO2+K2O=K2SO3