共50条信息
有四种烷烃:\(\rm{①3}\),\(\rm{3}\)一二甲基戊烷、\(\rm{②}\)正庚烷、\(\rm{③2}\)一甲基己烷、\(\rm{④}\)正丁烷。它们的沸点
由高到低的顺序是
分析下表中各项的排布规律,按此规律排布\(\rm{C_{8}H_{18}}\)在表中应为
\(\rm{1}\)
\(\rm{2}\)
\(\rm{3}\)
\(\rm{4}\)
\(\rm{5}\)
\(\rm{6}\)
\(\rm{7}\)
\(\rm{8}\)
\(\rm{9}\)
\(\rm{10}\)
\(\rm{C_{2}H_{4}}\)
\(\rm{C_{2}H_{6}}\)
\(\rm{C_{2}H_{6}O}\)
\(\rm{C_{2}H_{4}O_{2}}\)
\(\rm{C_{3}H_{6}}\)
\(\rm{C_{3}H_{8}}\)
\(\rm{C_{3}H_{8}O}\)
\(\rm{C_{3}H_{6}O_{2}}\)
\(\rm{C_{4}H_{8}}\)
\(\rm{C_{4}H_{10}}\)
进入组卷