1) C+O2 =CO2
CO2 +CaO =<span>CaCO3</span>
<span> <span>CaCO3=CaО +CO2</span></span>
<span><span> <span>CaO+H2O =<span>Ca(OH)2</span></span></span></span>
<span><span><span><span> <span>Ca(OH)2 + 2H2CO3(надлишок) =<span>Ca(HCO3)2 + 2H2O</span></span></span></span></span></span>
<span><span><span><span><span><span>2)S +O2 =SO2</span></span></span></span></span></span>
<span><span><span><span><span><span> 2SO2+O2 =2<span>SO3</span></span></span></span></span></span></span>
<span><span><span><span><span><span><span> <span>SO3 +H2O =<span>H2SO4</span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span> <span>H2SO4 +2Na =<span>Na2SO4 + H2</span></span></span></span></span></span></span></span></span></span></span>
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