问题
选择题
1 mol乙烯与Cl2完全加成后再与Cl2取代，整个过程中最多需Cl2( )
A．2 mol
B．4 mol
C．4.5 mol
D．5 mol
答案
答案：D
1 mol 乙烯与Cl2加成需1 mol Cl2，生成的
与Cl2发生取代反应，最多又需消耗4 mol Cl2，故整个过程最多需Cl2 5 mol。
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1 mol乙烯与Cl2完全加成后再与Cl2取代，整个过程中最多需Cl2( )
A．2 mol
B．4 mol
C．4.5 mol
D．5 mol
答案：D
1 mol 乙烯与Cl2加成需1 mol Cl2，生成的与Cl2发生取代反应，最多又需消耗4 mol Cl2，故整个过程最多需Cl2 5 mol。
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