Giải bài 3 trang 210 SGK Hóa học 11

$\begin{align} & a)C{{H}_{4}}+{{O}_{2}}\xrightarrow[xt]{{{t}^{o}}}HCHO+{{H}_{2}}O \\ & HCHO+\frac{1}{2}{{O}_{2}}\xrightarrow[xt]{{{t}^{o}}}HC\text{OO}H \\ & b)2C{{H}_{4}}\xrightarrow[\text{làm lạnh nhanh}]{{{1500}^{o}}C}{{C}_{2}}{{H}_{2}}+3{{H}_{2}} \\ & CH\equiv CH+{{H}_{2}}O\xrightarrow[{{80}^{o}}C]{HgS{{O}_{4}}}C{{H}_{3}}CHO \\ & C{{H}_{3}}CHO+\frac{1}{2}{{O}_{2}}\xrightarrow{{{t}^{o}},M{{n}^{2+}}}C{{H}_{3}}C{OO}H \\ \end{align}$