<span>4FeS2 + 11O2 → 2Fe2O3 + 8SO2↑\</span>
<span><span>CuO + H2=Cu+H2O</span></span>
<span>2SO2 + O2 → 2SO3 (требуется катализатор V2O5 и температура 450°)</span>
<span><span>S+O2=SO2</span></span>
<span><span>Fe2O3+<span> </span>H2<span>= Fe+ </span>h2o</span></span>
<span><span>CH4+<span>2</span>O2<span> = CO2 + 2H2O.</span></span></span>
<span><span><span><span> 2</span>H2+<span> </span>O2<span> → 2H2O</span></span></span></span>
<span>N2+ O2 = 2NO-Q</span>