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What molecule is a stereoisomer of trans-2-pentene?

Answer 1

#"Trans-2-pentene"# does not have a stereoisomer. It does have a geometric isomer.

The mirror image of #"trans"-H_3C-CH_2CH=CHCH_3# is superposable upon its mirror image. How do I know this? Well, I just drew the isomer out and reflected its representation on the printed page.

For #"cis"-H_3C-CH_2CH=CHCH_3#, the connectivity is the same as for the #"trans"# isomer. #C1# connects to #C2# connects to #C3# etc. Nevertheless, the #cis# isomer is geometrically distinct from the #trans# isomer. Because these are geomeric isomers, which are NOT mirror images, the #cis# and #trans# isomers are diasteromers, geometric isomers that are not mirror images.

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Answer 2

Sarah Angotti

The stereoisomer of trans-2-pentene is cis-2-pentene.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.