Please help

[hope_to_match]

I am reviewing Chad's notes and have stumbled upon propene--->propanol

he said that it is not a redox reaction. My question is why? We added a hydrogen on a primary carbon, wouldn't this qualify a reaction to be redox? thank you

 

[Jordwin]

You also added an o so it negates the h

 

[Jordwin]

It's throughout the whole molecule that you determine if it is reduced or oxidized. That particular carbon was reduced, but the other was oxidized. This gives you a non-redox answer.

 

[hope_to_match]

thanks

what about when we add two bromines to a propene. he said it is an oxidation reaction..

 

[bigTOOTHguy]

its a net oxidation, you lose one EN group, the pi bond, but gain two more in the two Br substituents

 

[Jordwin]

You can remember FONClBrICH to remember electronegativities which correspond to oxidative elements. If the element is more electronegative than carbon, or F O N Cl Br or I, it is considered oxidation. If it is less electronegative, or H, then it is reducing. In your question above, a Br(oxidative) and an H (reductive) were added. The overall net is neutral, or non redox as chad puts it. Hope this helps.

 

[hope_to_match]

You can remember FONClBrICH to remember electronegativities which correspond to oxidative elements. If the element is more electronegative than carbon, or F O N Cl Br or I, it is considered oxidation. If it is less electronegative, or H, then it is reducing. In your question above, a Br(oxidative) and an H (reductive) were added. The overall net is neutral, or non redox as chad puts it. Hope this helps.

thank you for taking the time to explain this. now i remember it. sometimes i cant understand my own notes 🙂 i will probably rewatch that portion of the video just in case!

also, if i remember correctly S is also on that list

 

[Jordwin]

thank you for taking the time to explain this. now i remember it. sometimes i cant understand my own notes 🙂 i will probably rewatch that portion of the video just in case!

also, if i remember correctly S is also on that list

Good catch! Yes s is before c.

And no problem, anytime! Glad I could help.