Đốt cháy este no, đơn chức, mạch hở A phải dùng 0,...

C

- Hướng dẫn giải

 Đáp án C

-Gọi este có CTPT: C_nH_2nO₂

\(\begin{gathered} {C_n}{H_{2n}}{O_2} + (\dfrac{{3n - 2}}{2}){O_2} \to nC{O_2} + n{H_2}O \hfill \\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(\frac{{3n - 2}}{2})\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,n \hfill \\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,0,35\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,0,3 \hfill \\\end{gathered} \)

\(\begin{gathered}= > (\dfrac{{3n - 2}}{2}).0,3 = 0,35.n < = > n = 3 \hfill \\ = >CTPT\,\,{\text{Este}}\,\,\,{\text{:}}{{\text{C}}_{\text{3}}}{{\text{H}}_{\text{6}}}{{\text{O}}_{\text{2}}} \hfill \\ \end{gathered} \)