Lời giải:Số trieste được tạo thành khi cho glixerol tác dụng với 2 axit béo là 6
\(\begin{array}{*{20}{l}}
{{{\left( {{C_{17}}{H_{35}}COO} \right)}_3}{C_3}{H_5};\;\;\;{{\left( {{C_{15}}{H_{31}}COO} \right)}_3}{C_3}{H_5};{\rm{ }}\left( {{C_{17}}{H_{35}}COO,\;{C_{17}}{H_{35}}COO,{\rm{ }}{C_{15}}{H_{31}}COO} \right){C_3}{H_5};}\\
\begin{array}{l}
({C_{17}}{H_{35}}COO,{C_{15}}{H_{31}}COO,{C_{17}}{H_{35}}COO){C_3}{H_5};\\
({C_{15}}{H_{31}}COO,{C_{15}}{H_{31}}COO,{C_{17}}{H_{35}}COO){C_3}{H_5};({C_{15}}{H_{31}}COO,\;{C_{17}}{H_{35}}COO,{\rm{ }}{C_{15}}{H_{31}}COO){C_3}{H_5};
\end{array}
\end{array}\)
