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U3-2-1 - Geometric Isomers
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片总数: 8 张•内容版本: v4•公开卡包•更新时间: 8/1/2026
卡片预览 (8 张)
#1
正面 (问题)
When can geometric isomers occur?
背面 (解答)
When there is a lack of free rotation around a C to C bond, e.g. C=C or ring structure.
#2
正面 (问题)
Is this isomer cis or trans?
背面 (解答)
Cis both CH3 groups on the same side of C=C
#3
正面 (问题)
Is this isomer cis or trans?
背面 (解答)
Trans both CH3 groups on opposite sides of C=C
#4
正面 (问题)
Why is this isomer cis?
背面 (解答)
Both substituents (CH3) on the same side of the C=C bond.
#5
正面 (问题)
Why is this isomer trans?
背面 (解答)
Both substituents (CH3) on opposite sides of the C=C bond.
#6
正面 (问题)
Why does propene not have geometric isomers?
背面 (解答)
Propene has two hydrogens attached to the first carbon of C=C.
#7
正面 (问题)
Will cis or trans isomers have the higher melting point?
背面 (解答)
Trans
#8
正面 (问题)
Why do trans isomers have higher melting points?
背面 (解答)
Closer packing due to their shape allows for stronger IMFs.