How Many Structural (Constitutional) Isomers Are There for Propylene, and Why

question 33

Multiple Choice

How many structural (constitutional) isomers are there for propylene, and why?

• A) two, because of resonance
• B) two, because of geometrical isomerism
• C) two, because the double bond can be in either one of two locations
• D) none, because the two skeletal structures can be superimposed
• E) none, because double bonds always occur on the right in alkenes

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Definitions:

Evaporation

The process by which water changes from a liquid to a vapor or gas, a key component of the Earth's water cycle.

Transpiration

The method through which water moves inside plants from the roots to tiny openings on the bottom of leaves, transforming into vapor before being emitted into the air.

Cohesion

The attraction between molecules of the same substance, which contributes to the integrity and stability of that substance.

Transpiration

The process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.