[nemzy]

1) how many moles of h2 gas should be taken up by 1 octene in the courseof this reaction?


CH3-(CH2)5-CH=CH2  -> (H2PtCl6) -> NaBH4, C2H5OH, HCL -> CH3-(CH2)5-CH2-CH3

Answer is 2 right???

2) What volume does this correspond to at STP?

How can i solve this part?


3)  how many moles of molecular hydrogen are consumed per mole of the precatalyst (H2PtCl6) in order to convert it enterily to platinum metal?

Isnt this 2 also?? what is the diff between this and the moles of H2 gas for the question #1?

4)  How many moles of precataylst (H2PtCl6) are used in this reaction?

Again is isn't this 2??

My answers don't seem right and i am still a little dubios before submitting them...am i misunderstanding a simple concept here?

thanks

[AWK]

Each mole of octene needs 1 mole of H2 (one double bond)

H2PtCl6 + 2H2 = Pt + 6HCl

[dexangeles]

okies, call me *&^%^$ but what is the difference between 1-octene and n-octene?

[movies]

It must be n-octAne, otherwise the question doesn't make sense.

[AWK]

Octene(s) is more general name for all isomers of C8H16 with one double bond.
1-octene means hydrocarbon with normal chain (unbranched) and double bond at the first carbon atom.

[movies]

Yes, but the product must be n-octane.

At least I hope so, or else I really don't understand hydrogenation at all....

 

[dexangeles]

same here, that's what's getting me all confused

[AWK]

After hydrogenation of 1-octene, 2-octene, 3-octene or 4 octene we can obtain n-octane

[movies]

After hydrogenation of 1-octene, 2-octene, 3-octene or 4 octene we can obtain n-octane

Agreed.