positioning of a double bond in alkene (1 Viewer)

[s_t_a_r1234]

ive been told to write the structural formula of C7 alkene how do i write that?

 

[azza_3761]

CH2=CH-CH2-CH2-CH2-CH2-CH3 - hept-1-ene
CH3-CH=CH-CH2-CH2-CH2-CH3 - hept-2-ene
CH3-CH2-CH=CH-CH2-CH2-CH3 - hept-3-ene

 

[s_t_a_r1234]

but whtt if they dont specify eg they just say a c7 alkene?

 

[Dreamerish*~]

but whtt if they dont specify eg they just say a c7 alkene?

Then write any C7 alkene, but name it.

CH2=CH-CH2-CH2-CH2-CH2-CH3 - hept-1-ene
CH3-CH=CH-CH2-CH2-CH2-CH3 - hept-2-ene
CH3-CH2-CH=CH-CH2-CH2-CH3 - hept-3-ene

That's a bit hard to say.

How about 1-heptene, 2-heptene and 3-heptene?

 

[azza_3761]

Then write any C7 alkene, but name it.

That's a bit hard to say.

How about 1-heptene, 2-heptene and 3-heptene?

For this question, yes i would agree. But when u start getting compounds with OH-, halogens etc. it makes it easier if you can seperate the possition of the double bond...that and the fact that i'm use to it now